A. Avaei, Abdoul R. Ghotbi and M. Aryafar
American Journal of Engineering and Applied Sciences 1 ( 1 ): 76 - 81 , 2008
Mehrdad Aryafar, Abdoul R. Ghotbi, Mehdi Aryafar and Amin Avaei
American Journal of Engineering and Applied Sciences 1 ( 4 ): 389 - 392 , 2008
A. Barari, Abdoul R. Ghotbi, F. Farrokhzad and D.D. Ganji
Journal of Applied Sciences 8 ( 1 ): 120 - 126 , 2008
Abdoul R. Ghotbi, M. A. Mohammadzade, A. Avaei and M. Keyvanipoor
Journal of Mathematics and Statistics 3 ( 4 ): 201 - 206 , 2007