SUGAWA, Toshiyuki; WANG, Li-Mei. Spirallikeness of shifted hypergeometric functions. Annales Fennici Mathematici, [S. l.], v. 42, n. 2, p. 963–977, 2017. DOI: 10.5186/aasfm.2017.4257. Disponível em: https://afm.journal.fi/article/view/135704. Acesso em: 12 dec. 2025.