Document Type : Survey
. (2005). . Mathematical Culture and Thought, 24(2), 119-124.
. "", Mathematical Culture and Thought, 24, 2, 2005, 119-124.
. (2005). '', Mathematical Culture and Thought, 24(2), pp. 119-124.
, "," Mathematical Culture and Thought, 24 2 (2005): 119-124,
. . An Expository Journal of the Iranian Mathematical Society. 2005;24(2):119-124 (In Persian).