SEMERICH, Yu. S. The construction of loci with a cyclical symmetry by the R‐functions. Mathematical Modelling and Analysis, [S. l.], v. 10, n. 1, p. 73–82, 2005. DOI: 10.3846/13926292.2005.9637272. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/9664. Acesso em: 9 may. 2025.