SURYANARAYANA, D.; RAMA CHANDRA RAO, R. On an Asymptotic Formula of Ramanujan. MATHEMATICA SCANDINAVICA, [S. l.], v. 32, p. 258–264, 1973. DOI: 10.7146/math.scand.a-11460. Disponível em: https://tidsskrift.dk/math/article/view/11460. Acesso em: 14 aug. 2026.