ATANASSOV, A. Applying a Situational Analysis Solver to Problems Involving Umbra/Sunlit Model. Proceedings of the Bulgarian Academy of Sciences, Sofia, Bulgaria, v. 76, n. 7, p. 1054–1064, 2023. DOI: 10.7546/CRABS.2023.07.09. Disponível em: https://proceedings.bas.bg/index.php/cr/article/view/350. Acesso em: 25 oct. 2026.