Optimal geometry for lunar swing-by maneuvers aided by solar sails in the restricted four-body problemRebeca S. Ribeiro, Lucas G. Meireles, Cristiano F. de Melo and Antonio F. B. A. PradoEur. Phys. J. Spec. Top., 232 18-19 (2023) 3105-3111DOI: https://doi.org/10.1140/epjs/s11734-023-01028-8