Hall, G. S. Symmetries and curvature structure in general relativity / G. S. Hall, G. S. Mall, GS Hall. - [S.l.] : World Scientific Publishing Company, 2004. - 440 p. ; 23 cm. - Lecture notes in physics. . - Lecture notes in physics. . ISBN: 9810210515 9789810210519 Dewey Class. No.: 539.725