2012 9th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI) Ubiquitous Robots and Ambient Intelligence (URAI), 2012 9th International Conference on. :643-645 Nov, 2012
Journal of the Korean Society for Industrial and Applied Mathematics (J. Korean Soc. Ind. Appl. Math.) (20190101), 23, no.~1, 19-30. ISSN: 1226-9433 (print).eISSN: 1229-0645.