ALEX, K. M. The Angle Trisection Solution (A Compass-Straightedge (Ruler) Construction). JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 13, n. 4, p. 7308-7332, 2017. DOI: 10.24297/jam.v13i4.6175. Disponível em: https://rajpub.com/index.php/jam/article/view/6175. Acesso em: 21 oct. 2020.