B. Bairagi, B. Dey, B. Sarkar, and S. Sanyal. International Journal on Soft Computing, Artificial Intelligence and Applications (IJSCAI),, 1 (3):
9(December 2012)
P. Vorst, and A. Zell. European Robotics Symposium 2008, volume 44/2008 of Springer Tracts in Advanced Robotics, page 273-282. Springer Berlin / Heidelberg, (February 2008)