Document Type : Survey
. (2014). . Mathematical Culture and Thought, 33(1), 61-64.
. "", Mathematical Culture and Thought, 33, 1, 2014, 61-64.
. (2014). '', Mathematical Culture and Thought, 33(1), pp. 61-64.
, "," Mathematical Culture and Thought, 33 1 (2014): 61-64,
. . An Expository Journal of the Iranian Mathematical Society. 2014;33(1):61-64 (In Persian).