M. Ra, J. Davara, R. Parmar, und H. Raval. International Journal on Recent and Innovation Trends in Computing and Communication, 3 (1):
76--81(Januar 2015)
X. Liu, L. Ren, F. Yuan, und B. Yang. Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on, 2, Seite 23 -26. (Juli 2009)
I. Fung, S. Doney, K. Lindsay, und J. John. Proceedings of the National Academy of Sciences of the United States of America, 102 (32):
11201-11206(2005)