@article{EMJ_2016_7_1_a3,
     author = {M. Muratbekov and M. Otelbaev},
     title = {On the existence of a resolvent and separability for a class of singular hyperbolic type differential operators on an unbounded domain},
     journal = {Eurasian mathematical journal},
     pages = {50--67},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2016_7_1_a3/}
}