Document Type : Survey
. (2001). . Mathematical Culture and Thought, 20(1), 45-52.
. "", Mathematical Culture and Thought, 20, 1, 2001, 45-52.
. (2001). '', Mathematical Culture and Thought, 20(1), pp. 45-52.
, "," Mathematical Culture and Thought, 20 1 (2001): 45-52,
. . An Expository Journal of the Iranian Mathematical Society. 2001;20(1):45-52 (In Persian).
