Khachatryan, Kh. A. “ON ONE URYSOHN TYPE NONLINEAR INTEGRAL EQUATION WITH NONCOMPACT OPERATOR”. Proceedings of the YSU A: Physical and Mathematical Sciences, vol. 44, no. 3 (223), Oct. 2010, pp. 23-28, doi:10.46991/PYSU:A/2010.44.3.023.