Mel'nik VS. Multivariational Inequalities and Operator Inclusions in Banach Spaces with Mappings of the Class $(S)_{+}$. Ukr. Mat. Zhurn. [Internet]. 2000 Nov. 25 [cited 2025 Dec. 6];52(11):1513-2. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4557