2010 International Conference on Electrical and Control Engineering Electrical and Control Engineering (ICECE), 2010 International Conference on. :460-462 Jun, 2010
Proceedings of the National Academy of Sciences of the United States of America. 2/10/2009, Vol. 106 Issue 6, p1942-1947. 6p. 1 Diagram, 1 Chart, 2 Graphs.