Document Type : Translation
. (2003). . Mathematical Culture and Thought, 22(1), 55-60.
. "", Mathematical Culture and Thought, 22, 1, 2003, 55-60.
. (2003). '', Mathematical Culture and Thought, 22(1), pp. 55-60.
, "," Mathematical Culture and Thought, 22 1 (2003): 55-60,
. . An Expository Journal of the Iranian Mathematical Society. 2003;22(1):55-60 (In Persian).
