ZhuravlevV. F. (2018) “Bifurcation conditions for the solutions of weakly perturbed boundary-value problems for operator equations in Banach spaces”, Ukrains’kyi Matematychnyi Zhurnal, 70(3), pp. 366-378. Available at: http://umj.imath.kiev.ua/index.php/umj/article/view/1562 (Accessed: 5December2020).