@article{VSGTU_2005_34_a25,
     author = {S. V. Efimova},
     title = {A nonlocal problem for a hyperbolic equation degenerating inside a region},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {194--196},
     publisher = {mathdoc},
     number = {34},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_2005_34_a25/}
}