HUMENBERGER, Hans; SCHUPPAR, Berthold. Balanced areas in quadrilaterals - Anne’s Theorem and its unknown origin. Teaching Mathematics and Computer Science, [S. l.], v. 17, n. 1, p. 93–103, 2019. DOI: 10.5485/TMCS.2019.0462. Disponível em: https://ojs.lib.unideb.hu/tmcs/article/view/10951.. Acesso em: 17 may. 2024.