. (1988). -. (e16555). Journal of Science,University of Tehran(not publish), 3و4(0), e16555

. "-" .e16555 , Journal of Science,University of Tehran(not publish), 3و4, 0, 1988, e16555.

. (1988). '-', Journal of Science,University of Tehran(not publish), 3و4(0), e16555.

, "-," Journal of Science,University of Tehran(not publish), 3و4 0 (1988): e16555,

. -. Journal of Science,University of Tehran(not publish). 1988;3و4(0):e16555 (In Persian).