(1997). . Iranian Journal of Information Processing and Management, 13(1), 20-28.
. "", Iranian Journal of Information Processing and Management, 13, 1, 1997, 20-28.
(1997). '', Iranian Journal of Information Processing and Management, 13(1), pp. 20-28.
, "," Iranian Journal of Information Processing and Management, 13 1 (1997): 20-28,
. Iranian Journal of Information Processing and Management, 1997; 13(1): 20-28.
