@article{DAN_1978_242_5_a6,
     author = {A. M. Nakhushev},
     title = {A nonlocal problem and the {Goursat} problem for a loaded equation of hyperbolic type, and their applications to the prediction of ground moisture},
     journal = {Doklady Akademii Nauk},
     pages = {1008--1011},
     publisher = {mathdoc},
     volume = {242},
     number = {5},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_242_5_a6/}
}