GERGELITSOVÁ, Šárka; HOLAN, T. Mocnost bodu ke kružnici v důkazech. Matematika–Fyzika–Informatika, [S. l.], v. 24, n. 4, p. 252–263, 2015. Disponível em: http://158.194.80.143/index.php/mfi/article/view/219. Acesso em: 13 led. 2025.