1. Exact solutions of Einstein’s field equations;Stephani,2003
2. Symmetries and curvature structure in general relativity;Hall,2004
3. Isometries in bianchi types VI and VII space-times;Ali;Adv Stud Theor Phys,2012
4. Killing vectors of static spherically symmetric metrics;Bokhari;J Math Phys,1990
5. Classification of spherically symmetric non static space-times according to their killing vector fields;Ali;Appl Math Sci,2012