Document Type : Review
. (1999). . Mathematical Culture and Thought, 18(2), 11-19.
. "", Mathematical Culture and Thought, 18, 2, 1999, 11-19.
. (1999). '', Mathematical Culture and Thought, 18(2), pp. 11-19.
, "," Mathematical Culture and Thought, 18 2 (1999): 11-19,
. . An Expository Journal of the Iranian Mathematical Society. 1999;18(2):11-19 (In Persian).
