{. Krumm. Studies in Economic Policy, American Enterprise Institute for Public Policy Research Amer. Enterprise Inst. for Public Policy Research, Washington, D.C. u.a., (1981)
Y. Cheng, Y. Chawathe, A. Lamarca, and J. Krumm. MobiSys '05: Proceedings of the 3rd international conference on Mobile systems, applications, and services, page 233--245. New York, NY, USA, ACM Press, (2005)