Hermitesche und orthogonale Operatoren über kommutativen Ringen. F. Ischebeck, W. Scharlau (1973) Mathematische Annalen
Hilbert-Kunz function of monomial ideals and binomial hypersurfaces. Aldo Conca (1996) Manuscripta mathematica
Homotopy Lie algebras and Poincaré series of algebras with monomial relations. Avramov, Luchezar L. (2002) Homology, Homotopy and Applications