K. Kamijo, T. Aihara, and M. Murase. MobiQuitous, volume 73 of Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, page 198-209. Springer, (2010)
F. Kamijo, and M. Nakayashiki. Professional Development of Information Technology Professionals, volume A-17 of IFIP Transactions, page 179-186. North-Holland, (1992)