Document Type : Translation
. (2002). . Mathematical Culture and Thought, 21(2), 55-62.
. "", Mathematical Culture and Thought, 21, 2, 2002, 55-62.
. (2002). '', Mathematical Culture and Thought, 21(2), pp. 55-62.
, "," Mathematical Culture and Thought, 21 2 (2002): 55-62,
. . An Expository Journal of the Iranian Mathematical Society. 2002;21(2):55-62 (In Persian).
