PFEIFER, D. A note on Cardano’s formula. Annals of Mathematics and Physics, [S. l.], v. 7, n. 1, p. 064–066, 2024. DOI: 10.17352/amp.000107. Disponível em: https://www.peertechzpublications.us/amp/article/view/AMP-7-207. Acesso em: 8 apr. 2025.