NISHEVA-PAVLOVA, M. Knowledge representation and problem solving in the intelligent computer algebra system STRAMS. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 91, p. 193–202, 1999. Disponível em: https://stipendii.uni-sofia.bg/index.php/fmi/article/view/278. Acesso em: 4 dec. 2024.