. (2014). Bulletin of the Iranian Mathematical Society. (e579). Bulletin of the Iranian Mathematical Society, 40(6), e579

. "Bulletin of the Iranian Mathematical Society" .e579 , Bulletin of the Iranian Mathematical Society, 40, 6, 2014, e579.

. (2014). 'Bulletin of the Iranian Mathematical Society', Bulletin of the Iranian Mathematical Society, 40(6), e579.

, "Bulletin of the Iranian Mathematical Society," Bulletin of the Iranian Mathematical Society, 40 6 (2014): e579,

. Bulletin of the Iranian Mathematical Society. BIMS. 2014;40(6):e579.