Mathematical Analysis and Abstract Algebraic Properties of Transformation Symbols in Differential Systems. International Journal of Environmental Sciences, [S. l.], p. 1072–1083, 2025. DOI: 10.64252/d8pdqj53. Disponível em: https://theaspd.com/index.php/ijes/article/view/10640.. Acesso em: 12 oct. 2025.