QUADRELLI, C. Pro-$p$ groups with few relations and universal Koszulity. MATHEMATICA SCANDINAVICA, [S. l.], v. 127, n. 1, p. 28–42, 2021. DOI: 10.7146/math.scand.a-123644. Disponível em: https://www.mscand.dk/article/view/123644. Acesso em: 16 may. 2021.