paperDescribing the platycosmsarXiv:math/0311476AbstractWe study in detail the closed flat Riemannian 3-manifolds.47 pages, 35 figuresReferences in corpus (1)Hearing the platycosmsCited by in corpus (2)(Z_2^k)-manifolds are isospectral on formsSingularities in and Stability of Ooguri-Vafa-Verlinde Cosmologies