1. http://www.kannel.org.
2. http://www.wirelessdevnet.com/channels/lbs/features/mobilepositioning.html.
3. Wireless application protocol architecture specification. Technical report, WAP Forum, April 1998. http://www.wapforum.org/.
4. Cédric Besse, Ana Cavalli, Myungchul Kim, and Fatiha Zaïdi. Automated generation of interoperability tests. In Kluwer,Testing Internet Technologies and Services, Berlin, March 2002.
5. R. Castanet and O. Kone. Deriving coordinated testers for interoperability.Protocol Test Systems, VI (C-19): 331–345, 1994. Elsevier Science Publisher B. V.(North-Holland).