. (1980). -. (e16215). Journal of Science,University of Tehran(not publish), 3و4(0), e16215

. "-" .e16215 , Journal of Science,University of Tehran(not publish), 3و4, 0, 1980, e16215.

. (1980). '-', Journal of Science,University of Tehran(not publish), 3و4(0), e16215.

, "-," Journal of Science,University of Tehran(not publish), 3و4 0 (1980): e16215,

. -. Journal of Science,University of Tehran(not publish). 1980;3و4(0):e16215 (In Persian).