Baues, H.-J. Max Planck Institute for Mathematics, Max Planck Society;
Baues, H.-J., & Drozd, Y. (2001). Indecomposable homotopy types with at most two non-trivial homology groups. In Groups of homotopy self-equivalences and related topics, Gargnano 1999, Contemporary Mathematics 274 (pp. 39-56). Providence/RI: American Mathematical Society.