Mathematical and Quantum Aspects of Relativity and Cosmology Proceedings of the Second Samos Meeting on Cosmology, Geometry and Relativity Held at Pythagoreon, Samos, Greece, 31 August - 4 September 1998 - Cotsakis, Spiros; Cotsakis, Spiros; Gibbons, Gary W.; Gibbons, Gary W. (Springer Berlin Heidelberg : Imprint: Springer, 2000)