VERMA, A.; SHARMA, A. ON THE CESARO SUMMABILITY OF ULTRASPHERICAL SERIES. Tamkang Journal of Mathematics, [S. l.], v. 26, n. 4, p. 371–376, 1995. DOI: 10.5556/j.tkjm.26.1995.4416. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4416. Acesso em: 22 dec. 2024.