Document Type : Translation
. (2011). . Mathematical Culture and Thought, 29(2), 21-29.
. "", Mathematical Culture and Thought, 29, 2, 2011, 21-29.
. (2011). '', Mathematical Culture and Thought, 29(2), pp. 21-29.
, "," Mathematical Culture and Thought, 29 2 (2011): 21-29,
. . An Expository Journal of the Iranian Mathematical Society. 2011;29(2):21-29 (In Persian).
