KARLSSON, P. W. Some Reduction Formulas for Hypergeometric Functions. MATHEMATICA SCANDINAVICA, [S. l.], v. 31, p. 248–256, 1972. DOI: 10.7146/math.scand.a-11431. Disponível em: https://www.mscand.dk/article/view/11431. Acesso em: 4 may. 2024.