Salem, R. (2012). On zip and weak zip rings of skew generalized power series. test, 20(3), 157-162. doi: org/10.1016/j.joems.2012.10.003
R. M. Salem. "On zip and weak zip rings of skew generalized power series". test, 20, 3, 2012, 157-162. doi: org/10.1016/j.joems.2012.10.003
Salem, R. (2012). 'On zip and weak zip rings of skew generalized power series', test, 20(3), pp. 157-162. doi: org/10.1016/j.joems.2012.10.003
Salem, R. On zip and weak zip rings of skew generalized power series. test, 2012; 20(3): 157-162. doi: org/10.1016/j.joems.2012.10.003