Approximate controllability of semilinear neutral systems in Hilbert spaces. Mahmudov, N.I.; Zorlu, S. — 2003 Journal of Applied Mathematics and Stochastic Analysis
q -parametric Bleimann Butzer and Hahn operators. Mahmudov, N.I.; Sabancıgil, P. — 2008 Journal of Inequalities and Applications [electronic only]