. (2020). . Mathematical Culture and Thought, 39(1), 157-167.
. "", Mathematical Culture and Thought, 39, 1, 2020, 157-167.
. (2020). '', Mathematical Culture and Thought, 39(1), pp. 157-167.
, "," Mathematical Culture and Thought, 39 1 (2020): 157-167,
. . An Expository Journal of the Iranian Mathematical Society. 2020;39(1):157-167 (In Persian).
