. (2015). Bulletin of the Iranian Mathematical Society. (e651). Bulletin of the Iranian Mathematical Society, 41(4), e651

. "Bulletin of the Iranian Mathematical Society" .e651 , Bulletin of the Iranian Mathematical Society, 41, 4, 2015, e651.

. (2015). 'Bulletin of the Iranian Mathematical Society', Bulletin of the Iranian Mathematical Society, 41(4), e651.

, "Bulletin of the Iranian Mathematical Society," Bulletin of the Iranian Mathematical Society, 41 4 (2015): e651,

. Bulletin of the Iranian Mathematical Society. BIMS. 2015;41(4):e651.