JUOZAPAVIČIUS, Algimantas. Symbolic computation: systems and applications. Nonlinear Analysis: Modelling and Control, [S. l.], v. 3, n. 1, p. 59–72, 1998. DOI: 10.15388/NA.1998.3.0.15257. Disponível em: https://www.journals.vu.lt/nonlinear-analysis/article/view/15257.. Acesso em: 6 may. 2024.