T. Binfarid et al., THE CLASSIFICATION OF STATIC PLANE SYMMETRICAL SPACE-TIMES ACCORDING TO THEIR RICCI COLLINEATIONS, Journal of mathematical physics, 36(10), 1995, pp. 5812-5828
Static plane symmetric space-times are classified according to their R
icci collineations (RCs). Their relation with isometries of the space-
times is established. Unlike the spherically symmetric space-times, so
me metrics are found for a nondegenerate Ricci tenser which have more
RCs than isometries. (C) 1995 American Institute of Physics.