Document Type : Translation
. (2008). . Mathematical Culture and Thought, 26(2), 85-89.
. "", Mathematical Culture and Thought, 26, 2, 2008, 85-89.
. (2008). '', Mathematical Culture and Thought, 26(2), pp. 85-89.
, "," Mathematical Culture and Thought, 26 2 (2008): 85-89,
. . An Expository Journal of the Iranian Mathematical Society. 2008;26(2):85-89 (In Persian).
