Document Type : Translation
. (2008). . Mathematical Culture and Thought, 27(1), 71-75.
. "", Mathematical Culture and Thought, 27, 1, 2008, 71-75.
. (2008). '', Mathematical Culture and Thought, 27(1), pp. 71-75.
, "," Mathematical Culture and Thought, 27 1 (2008): 71-75,
. . An Expository Journal of the Iranian Mathematical Society. 2008;27(1):71-75 (In Persian).
