Davies, P. C. W. The edge of infinity : beyond the black hole / P. C. W. Davies - London : Penguin Books, c1994. - xx, 194p. : ill. ; 19cm. Includes index. ISBN: 0140231943 Subjects--Topical Terms: Naked singularities (Cosmology)Black holes (Astronomy) Dewey Class. No.: 523.8875 / DAV