K.Q. Yan and S.C. Wang
Information Technology Journal 3 ( 3 ): 275 - 282 , 2004
Journal of Applied Sciences 4 ( 3 ): 344 - 353 , 2004
S.C. Wang and K.Q. Yan
Journal of Applied Sciences 3 ( 7 ): 493 - 509 , 2003