1. V. Álvarez, J.A. Armario, M.D. Frau and P. Real. Homology ofsemidirect products offinite abelian groups with group action. Preprint of Dpto. Matemática Aplicada I, University ofSeville (Spain, 2001).
2. V. Álvarez, J.A. Armario, M.D. Frau and P. Real. Homology ofsemidirect products ofgroups: algorithms and applications. Preprint of Dpto. Matemática Aplicada I, University ofSeville (Spain, 2001).
3. V. Álvarez, J.A. Armario, P. Real. On the homology o fsemi-direct products ofgroups. Colloquium on Topology, Gyula (Hungary, 1998).
4. J.A. Armario, P. Real and B. Silva. On p-minimal homological models oft wisted tensor products ofelemen tary complexes localized over a prime. Contemporary Mathematics, 227, 303–314, (1999).
5. K.S. Brown. Cohomology ofgroups. Graduate Texts in Math., 87, Springer-Verlag, New York (1982).