GER, Joanna. On analytic solutions of the equation ϕ(f(x)) = g(x,ϕ(x)) (III). Annales Mathematicae Silesianae, [S. l.], v. 1, p. 93–102, 1985. Disponível em: https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/14339. Acesso em: 2 jul. 2025.