BP Beginning partial differential equations by O'Neil, Peter V. fromPure and Applied Mathematics (Nowy Jork 0 Type: Book
TW The wave equation on a curved space-time by Friedlander, Friedrich Gerard fromCambridge monographs on mathematical physics 0 Type: Book
UR Unitary representations of the Poincaré group and relativistic wave equations by Ohnuki, Yoshio, Kitakado, S., Sugiyama, T. 0 Type: Book
EO Elements of Green's functions and propagation: potentials, diffusion, and waves by Barton, Gabriel fromOxford science publications 0 Type: Book
