%0 Journal Article %A N. E. Maryukova %T Surfaces of constant curvature in a quasi-pseudo-Riemannian space of constant curvature, and the Klein--Gordon equation %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2002 %P 36-41 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2002_3_a4/ %G ru %F IVM_2002_3_a4