Колосова, С. В., & Луханін, В. С. (2016). On positive solutions of one problem with heterotone operator and the construction of successive approximations. Bulletin of V.N. Karazin Kharkiv National University, Series «Mathematical Modeling. Information Technology. Automated Control Systems», 31(1), 59-72. Retrieved from https://periodicals.karazin.ua/mia/article/view/6810