LampreiaJosé Paulo, SeverinoRicardo José Mendes, and de Sousa RamosJosé Rodrigues Santos. 1999. “Renormalization on Iterated Cubic Maps”. Annales Mathematicae Silesianae 13 (September), 193-204. https://www.journals.us.edu.pl/index.php/AMSIL/article/view/14148.