R. Bertolotti et al., RICCI COLLINEATIONS OF STATIC SPHERICALLY SYMMETRICAL SPACETIMES - COMMENT, Journal of mathematical physics, 37(2), 1996, pp. 1086-1088
We present a counter example to a theorem given by Amir et al. [J. Mat
h. Phys. 35, 3005-3012 (1994)]. We also comment on a misleading statem
ent of the same reference. (C) 1996 American Institute of Physics.