Hassan, R. F., S. K. . AL-Saidy, and N. J. . AL-Jawari. “Best One Sided Multiplier Approximation of Unbounded Functions by Polynomials Operators”. Al-Mustansiriyah Journal of Science, vol. 33, no. 2, June 2022, pp. 50-55, doi:10.23851/mjs.v33i2.1082.