Chang, Hangbae, Hyukjun Kwon, Jonggu Kang, and Yanghoon Kim. “A Case Study on Intelligent Service Design in Ubiquitous Computing”. Computing and Informatics 30, no. 3 (January 26, 2012): 513–529. Accessed November 8, 2024. http://147.213.75.17/ojs/index.php/cai/article/view/182.