Journal of Applied Sciences 6 ( 3 ): 611 - 615 , 2006
Ali Azadeh and S. Farid Ghaderi
Journal of Computer Science 2 ( 4 ): 382 - 387 , 2006
Ali Azadeh and S. Farid Ghaderi
Journal of Computer Science 2 ( 4 ): 363 - 369 , 2006
Journal of Mathematics and Statistics 1 ( 3 ): 252 - 256 , 2005