F. Kargl, S. Geßler, and F. Flerlage. Ubiquitous Computing Systems, volume 4836 of Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-540-76772-5_9.(2010)
H. Miura, K. Hirano, N. Matsuda, H. Taki, N. Abe, and S. Hori. Knowledge-Based Intelligent Information and Engineering Systems, volume 4694 of Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-540-74829-8_130.(2010)
N. Pattan, and D. Madamanchi. Mobile Computing, Applications, and Services, volume 35 of Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, Springer Berlin Heidelberg, 10.1007/978-3-642-12607-9_21.(2010)