Zhuravlev VP, Fomin NP, Zabrodskiy PN. Conditions of solvability and submission of solutions of equations with operator matrix in banach spaces. Ukr. Mat. Zhurn. [Internet]. 2023Jul.19 [cited 2024Nov.24];71(4):471-85. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/305