Bronza, S. D., and A. T. Kotvytskiy. “Mathematical Bases of the Theory of N-Point Gravitational Lenses. Part 1. Elements of Algebraic Geometry”. Journal of V. N. Karazin Kharkiv National University. Series Physics0, no. 26 (January 15, 2018): 6-27. Accessed November 24, 2024. https://periodicals.karazin.ua/physics/article/view/10077.