E. Soroka, и D. Iracleous. Proceedings of the 5th WSEAS international conference on Communications and information technology, стр. 101--106. Stevens Point, Wisconsin, USA, World Scientific and Engineering Academy and Society (WSEAS), (2011)
B. Czerwinski, R. Debski, и K. Pietak. 2011 International Conference on Complex, Intelligent, and Software Intensive Systems, стр. 462--466. IEEE, (июня 2011)