FISCHER, V. The spherical maximal function on the free two-step nilpotent Lie group. MATHEMATICA SCANDINAVICA, [S. l.], v. 99, n. 1, p. 99–118, 2006. DOI: 10.7146/math.scand.a-15002. Disponível em: https://www.mscand.dk/article/view/15002. Acesso em: 27 apr. 2024.