Shelyakov, Mikhail A., and Vyacheslav V. Emelyanenko. “Investigation of Dynamical Evolution of Objects on Steady Halley-Type Orbits”. Ecological Bulletin of Research Centers of the Black Sea Economic Cooperation, no. 4 (December 30, 2013): 161–166. Accessed December 5, 2025. https://vestnik.kubsu.ru/article/view/539.