@article{CMFD_2019_65_2_a0, author = {E. L. Shishkina}, title = {General {Euler--Poisson--Darboux} equation and hyperbolic $B$-potentials}, journal = {Contemporary Mathematics. Fundamental Directions}, pages = {157--338}, publisher = {mathdoc}, volume = {65}, number = {2}, year = {2019}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/CMFD_2019_65_2_a0/} }