GULLIKSEN, T. H. On the Hilbert series of the homology of differential gaded algebras. MATHEMATICA SCANDINAVICA, [S. l.], v. 46, p. 15–22, 1980. DOI: 10.7146/math.scand.a-11848. Disponível em: https://www.mscand.dk/article/view/11848. Acesso em: 29 apr. 2024.