@article{DE_1982_18_1_a7,
     author = {A. M. Nakhushev},
     title = {An approximate method for solving boundary value problems for differential equations and its application to the dynamics of ground moisture and ground water},
     journal = {Differencialʹnye uravneni\^a},
     pages = {72--81},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_1_a7/}
}