VRETARE, Lars. On a recurrence formula for elementary spherical functions on symmetric spaces and its applications to multipliers for the spherical Fourier transform. Mathematica Scandinavica, Berkeley, CA, United States, v. 41, p. 99–112, 1977. DOI: 10.7146/math.scand.a-11705. Disponível em: https://journals.msp.org/mscand/article/view/1945. Acesso em: 25 jul. 2026.