. (2020). . Mathematical Culture and Thought, 39(1), 181-182.
. "", Mathematical Culture and Thought, 39, 1, 2020, 181-182.
. (2020). '', Mathematical Culture and Thought, 39(1), pp. 181-182.
, "," Mathematical Culture and Thought, 39 1 (2020): 181-182,
. . An Expository Journal of the Iranian Mathematical Society. 2020;39(1):181-182 (In Persian).
