Application of the "Mathematica" computer system to the determination of the coordinates of equilibrium positions in the Grebenikov - Elmabsut gravitation model of four bodies. Neliniini Kolyvannya, [S. l.], v. 2, n. 1, p. 16–18, 1999. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/35. Acesso em: 22 jan. 2026.