SINGH, R. A Note on Spiral-Like Functions. The Journal of the Indian Mathematical Society, [S. l.], v. 33, n. 1, p. 49–56, 1969. DOI: 10.18311/jims/1969/16743. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16743. Acesso em: 4 may. 2024.