MAZĖTIS, Edmundas; MELNIČENKO, Grigorijus. Algebraic values of sines and cosines and their arguments. Lietuvos matematikos rinkinys, [S. l.], v. 61, n. B, p. 21–28, 2021. DOI: 10.15388/LMR.2020.22717. Disponível em: https://www.journals.vu.lt/LMR/article/view/22717.. Acesso em: 3 may. 2024.