Document Type : Translation
. (2000). . Mathematical Culture and Thought, 19(2), 61-64.
. "", Mathematical Culture and Thought, 19, 2, 2000, 61-64.
. (2000). '', Mathematical Culture and Thought, 19(2), pp. 61-64.
, "," Mathematical Culture and Thought, 19 2 (2000): 61-64,
. . An Expository Journal of the Iranian Mathematical Society. 2000;19(2):61-64 (In Persian).
