• van Do, T., et.al. (2008), "Simple strong authentication for Internet applications using mobile phones", IEEE GLOBECOM 2008, November 30-December 4, 2008, New Orleans, USA, ACCEPTED

• Jørstad, I., van Do, T., Jønvik, T. & van Do, T. (2008), "Utilising emerging identity management frameworks in IMS", ICIN 2008, October 20-23, 2008, Bordeaux, France, ACCEPTED

• Jørstad, I., Bakken, E. & Johansen, T.A. (2008), "Performance evaluation of JSON and XML for data exchange in mobile services", International conference on wireless networks and systems, July 26-29, 2008, Porto, Portugal, ACCEPTED

• Johansen, T.A., Jørstad, I., van Do,. T. (2008), "Identity management in mobile ubiquitous environments ", International Conference on Internet Monitoring and Protection, Bucurest, Romania, June 29-July 5, 2008, ACCEPTED

• Nguyen, T. T., Jørstad, I., van Do,. T. (2008), "Security and performance of mobile XML Web Services ", International Conference on networking and services, Guadeloupe, French Caribbean , March 16-21, 2008

• van Do, T. & Jørstad, I. (2008), "The ambiguity of identity", Telektronikk 3/4 2007, http://www.telenor.com/telektronikk/

• Nguyen, H., Millidahl, S., van Do, T. & Jørstad, I. (2008), "Identity management standards, systems and standardisation bodies ", Telektronikk 3/4 2007, http://www.telenor.com/telektronikk/

• van Do, T., Jørstad, I., van Do, T. & Bang, N. (2008), "Identity management in telecommunication business ", Telektronikk 3/4 2007, http://www.telenor.com/telektronikk/

• Jørstad, I., van Do, T., Jønvik, T. & van Do, T. (2008), "Strong authentication for Internet applications with the GSM SIM ", Telektronikk 3/4 2007, http://www.telenor.com/telektronikk/

• Jørstad, I., van Do, T., Jønvik, T. & van Do, T. (2008), "Unifying CardSpace and Liberty Alliance with SIM authentication ", Telektronikk 3/4 2007, http://www.telenor.com/telektronikk/

• Jørstad, I. & van Do (2008), "The mobile phone as authentication token", Telektronikk 3/4 2007, http://www.telenor.com/telektronikk/

• Feng, B., van Do, T., Jørstad, I., Jønvik, T. & van Do (2008), "Identity management in a fixed-mobile convergent IMS environment", Telektronikk 3/4 2007, http://www.telenor.com/telektronikk/

• Ivar Jørstad, "Identity management and Single-Sign-On (Identitetshåndtering og Single-Sign-On)", Tekna Security Workshop, March 11th, 2008 , Oslo, Norway

• Norwegian patent no. 323214, "A method an arrangement for accessing services and files", February 29, 2007, Inventors: Do van Thuan, Do van Thanh and Ivar Jørstad. Assignee: Telenor ASA

• Jørstad, I. & Van Do, T. (2007), "Personalised Ubiquitous Access with XML Web Services", Elsevier Journal on Computer Networks, Special Issue on Middleware Challenges for Next Generation Networks and Seamless Services, Volume 51, Issue 16, November 14, 2007, p.p. 4655-4668

• Bjørnstad, T., Jørstad, I. & Van Do, T. (2007), "Securing Virtual Private Networks with SIM Authentication", 3rd IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2007)

• Hallsteinsen, S., Jørstad, I. & Van Do, T. (2007), "Using the mobile phone as a security token for unified authentication", The Second International Conference on Systems and Networks Communications 2007 (ICSNC), Cap Esterel, French Riviera, France, August 25-31

• Sivertsen, F., Jørstad, I. & Van Do, T. (2007), "Linux Mobile - A Platform for Advanced Future Mobile Services", Poster at WINSYS 2007, Barcelona, Spain, July 28-31, 2007

• Sivertsen, F., Jørstad, I. & Van Do, T. (2007), "Linux for advanced future mobile phones", Poster at ICIN 2007, Bordeaux, France, October 8-11, 2007

• Jørstad, I. et. al. (2007). "Bridging CardSpace and Liberty Alliance with SIM Authentication", ICIN 2007, Bordeaux, France

• Van Do, T. et. al. (2007). "Analysis of IMS Business Requirements", ICIN 2007, Bordeaux, France, October 8-11, 2007

• Holje, H., Jørstad, I., Van Do, T. (2007). "A Unified Authentication Solution for Mobile Services", 1st ERCIM Workshop on eMobility, In conjunction with WWIC 2007, Coimbra, Portugal, May 21, 2007, ISBN: 978-972-95988-9-0

• Jørstad, I. & Van Do, T. (2007), "A Framework and Tool for Personalisation of Mobile Services", Proceedings of the 8th International Conference on Mobile Data Management (MDM 2007), ISBN 1-4244-1241-2 - Manheim, Gernany, 7-11 May 2007

• Jørstad, I. (2006), "Future mobile service architectures - Service personalisation and continuity in future mobile services", Doctoral thesis at NTNU, 2006:189, Faculty of Information Technology, Mathematics and Electrical Engineering, Department of Telematics, November 1, 2006, ISBN: 82-471-8152-5 (print.), 82-471-8151-7 (elec.), ISSN: 1503-8181, printed by NTNU trykk

Book chapters

• Van Do, T., Jørstad I. , Dustdar. S. (2005). Ibrahim, I. K. (ed). Mobile Multimedia Collaborative Services . Chapter in "Handbook of Research on Mobile Multimedia". IDEA Group Publishing, ISBN: 1-59140-866-0 , May 22, 2006, see http://www.idea-group.com/reference/details.asp?ID=5071

• Jørstad, I. & Van Do, T. (2006). Ibrahim, I.K. (ed.) Personalisation and Continuity of Mobile Services . Chapter in " Mobile Multimedia: Communication Engineering Perspective", pp. 59-84, Nova Science Publishers, Inc. ISBN: 1-60021-207-7, FORTHCOMING: 2006, see https://www.novapublishers.com/catalog/product_info.php?products_id=4475

Peer-reviewed publications at international conferences

• Jørstad I. , van Do, T. & Dustdar, S. (2006). Personalisation of Next Generation Mobile Services . Ubiquitous Mobile Information and Collaboration Systems (UMICS2006), Luxembourg , Grand-Duchy of Luxembourg , June 5-6, 2006 , ISBN: 2-87037-525-5

• Jørstad I. & van Do, T. (2006). Service Personalisation in Mobile Heterogenous Environments . Advanced International Conference on Telecommunications (AICT2006), Guadeloupe , French Caribbean , February 19-22, 2006, ISBN: 0-7695-2522-9, Best paper award.

• van Do, T., Jørstad, I. & Jønvik, T. (2006). A Service Architecture Enabling Mobile E-Mail Access , 10 th International Conference on Intelligence in service delivery Networks (ICIN), May 29-June 1, Bordeaux, France, 2006

• van Do, T., Bang, N., van Do, T & Jørstad, I. (2006). Identity Management and business opportunities for Telcos , 10 th International Conference on Intelligence in service delivery Networks (ICIN), May 29-June 1, Bordeaux , France , 2006

• Wangensteen, A., Lunde, L., Jørstad, I. & van Do, T. (2006). A Generic Authentication System based on SIM , International Conference on Internet Surveillance and Protection ( ICISP 2006), Cap Esterel, French Riviera, August 27-September 2, 2006, Best paper award.

• Wangensteen, A., Lunde, L., Jørstad, I. & van Do, T. (2006). Secure enterprise access with strong SIM authentication, Proceedings of the 10th IEEE International EDOC Conference (EDOC 2006), Hong Kong, 16-20 October, 2006

• van Do, T., Jønvik, T. van Do, T. & Jørstad, I. (2006). Enhancing Internet service security using GSM SIM authentication, Proceedings of the IEEE Globecom 2006 conference, ISBN: 1-4244-0357-X, San Francisco, USA, Nov 27 - Dec 1, 2006

Invited papers

• van Do, T. & Jørstad, I. (2005). The mobile phone: Its evolution from a communication device to a universal companion. Telektronikk, Volume 101 No 3/4, 2005, published February 2006, ISSN: 0085-7130

• van Do, T. & Jørstad, I. (2005). Reading emails on mobile phones. Telektronikk, Volume 101 No 3/4, 2005, published February 2006, ISSN: 0085-7130

• van Do, T. & Jørstad, I. (2005). Fetching home music - Sending photos home. Telektronikk, Volume 101 No 3/4, 2005, published February 2006, ISSN: 0085-7130

• van Do, T. & Jørstad, I. (2005). The Virtual Device - The future mobile phone. Telektronikk, Volume 101 No 3/4, 2005, published February 2006, ISSN: 0085-7130

• Telenor patent: "A method and device for authenticating users" , Norwegian patent application no.#20061520

• Ivar Jørstad, "FIDELITY: Experiences with federated identity management", Software 2006, Den Norske Dataforening, February 8th, 2006, Oslo, Norway

2005

Peer-reviewed publications at international conferences

• Jørstad I. , van Do, T., Dustdar, S. (2005). A Service Continuity Layer for Mobile Services . IEEE Wireless Communications and Networking Conference, New Orleans, USA, 13-17 March 2005, ISBN: 0-7803-8967-0

• Jørstad I. , van Do, Thanh, van Do, Thuan. (2005). Enabling Mobile Access to the User Home Network . 12 th International Conference on Telecommunications (ICT2005), Cape Town, South Africa, 03-06 May 2005, ISBN: 0-9584901-3-9

• Jørstad, I., Dustdar, S., van Do, T. (2005) A Service-Oriented Architecture Framework for Collaborative Services , Distributed Mobile Collaboration (DMC2005), , Linkoping, Sweden, 13-15 June 2005, IEEE Computer Society, ISBN: 0-7695-2362-5

• Jørstad, I., Dustdar, S., van Do, T. (2005). Service-Oriented Architectures and Mobile Services , Ubiquitous Mobile Information and Collaboration Systems (UMICS2005), Porto , Portugal , 13-14 June 2005

• Jørstad, I. , van Do, T. (2005). A Service-Oriented Architecture Framework for Mobile Services , Advanced Industrial Conference on Telecommunications (AICT2005), Lisbon , Portugal , 18-22 July 2005, ISBN: 0-7995-2388-9

• Jørstad I. , van Do, T. (2005). The Personalization of Mobile Services . 1 st IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WIMOB2005), Montreal , Canada , 22-24 August 2005, ISBN: 0-7803-9182-9

Journal papers

• Jørstad I. , van Do, T., Dustdar, S. (2005). An Analysis of current mobile services and enabling technologies. International Journal of Ad Hoc and Ubiquitous Computing, Indescience Enterprises Ltd., ISSN: 1743-8225, Vol. 1, Nos.1/2, 2005, pp.92-102

• Telenor patent: "A system and method for establishing a connection between a client in a first network a Web Service server in another network" , Norwegian patent application no.#20055084

• Telenor patent: "A method and arrangement for accessing services and files " , Norwegian patent application no.#20051487

2004

Peer-reviewed publications at international conferences

• Jørstad, I., Dustdar, S., van Do, T. (2004). Evolution of Mobile Services: An analysis of current architectures with prospect to future . 2nd International Workshop on Ubiquitous Mobile Information and collaboration Systems (UMICS), co-located with CAiSE 2004, 7-11 June 2004, Riga , Latvia , Springer LNCS. ISBN: 3-540-24100-0

• Jørstad, I. , van Do, T., Dustdar, S. (2004). An analysis of service continuity in mobile services . 2nd International Workshop on Distributed and Mobile collaboration (DMC), WETICE conference, 14-16 June, Modena , Italy , 2004, IEEE Computer Society Press. ISBN: 0-7695-2183-5

• Jørstad, I., Dustdar, S., van Do, T. (2004). Service Continuity and Personalisation in Future Mobile Services . 10th International IFIP Workshop on Advances in Fixed and Mobile Networks (EUNICE 2004), Tampere, Finland, 14-16 June 2004. ISBN: 952-15-1187-7

• Jørstad, I. , van Do, T., Dustdar, S. (2004). Personalisation of Future Mobile Services. 9 th International Conference on Intelligence in service delivery Networks, Bordeaux , France , 18-21 October 2004

• Sivertsen, E., Finngard-Moe, J., Jørstad, I., van Do, T. Enabling Mobile Email Access with XML Web Services , IASTED International Conference on Communication and Computer Networks (CCN 2004), Boston, USA, 8-10 November 2004. ISBN: 0-88986-431-4

• Jørstad, I., Dustdar, S., van Do, T. (2004). Towards Service Continuity for Generic Mobile Services . The 2004 IFIP International Conference on Intelligence in Communication Systems (INTELLCOMM 04), Bangkok , Thailand , 23-26 November 2004. ISBN: 3-540-23893-X

2003

Peer-reviewed publications at international conferences

• Jørstad, I. & van Do, T. (2003). Future Mobile Services Architectures , Proceedings of The 8th International Conference on Intelligence in Next Generation Networks (ICIN 2003), Bordeaux , France , 31 March - 3 April, 2003

2002

Thesis

• Arnesen, S. & Jørstad, I. Future Mobile Services. University of Oslo , December 2002. Thesis for Cand. Scient. Degree.