VASKOUSKI, Maksim M.; FIRSAU, Maksim A.; BABAYEVA, Palina D. A generalisation of the Steiner – Lehmus theorem and critical values transcendence of its parameters. Journal of the Belarusian State University. Mathematics and Informatics, [S. l.], n. 2, p. 42–61, 2025. DOI: 10.33581/2520-6508-2025-2-42-61. Disponível em: https://journals.bsu.by/index.php/mathematics/article/view/6913. Acesso em: 17 jul. 2026.