Document Type : Translation
. (2007). . Mathematical Culture and Thought, 26(1), 63-65.
. "", Mathematical Culture and Thought, 26, 1, 2007, 63-65.
. (2007). '', Mathematical Culture and Thought, 26(1), pp. 63-65.
, "," Mathematical Culture and Thought, 26 1 (2007): 63-65,
. . An Expository Journal of the Iranian Mathematical Society. 2007;26(1):63-65 (In Persian).
