Quasinormal modes and greybody factors of a four-dimensional Lifshitz   black hole with z=0
  We study scalar perturbations for a four-dimensional asymptotically Lifshitz black hole in conformal gravity with dynamical exponent z=0, and spherical topology for the transverse section, and we find analytically and numerically the quasinormal modes for scalar fields for some special cases. Then, we study the stability of these black holes under scalar field perturbations and the greybody factors. 
Marcela Catalan, Eduardo Cisternas, P. A. Gonzalez and Yerko Vasquez
gr-qc