Document Type : Opinion
. (2008). . Mathematical Culture and Thought, 26(2), 55-65.
. "", Mathematical Culture and Thought, 26, 2, 2008, 55-65.
. (2008). '', Mathematical Culture and Thought, 26(2), pp. 55-65.
, "," Mathematical Culture and Thought, 26 2 (2008): 55-65,
. . An Expository Journal of the Iranian Mathematical Society. 2008;26(2):55-65 (In Persian).
