Generalized Hantzsche-Wendt Flat Manifolds
  We study the family of closed Riemannian n-manifolds with holonomy group isomorphic to $Z_2^{n-1}$, which we call generalized Hantzsche-Wendt manifolds. We prove results on their structures, compute some invariants, and find relations between them, illustrated in graph connecting the family. 
Juan Pablo Rossetti, Andrzej Szczepanski