@article{DAN_1975_220_3_a9,
     author = {E. S. Dzektser},
     title = {Equation of motion of underground water with a free surface in multilayer media},
     journal = {Doklady Akademii Nauk},
     pages = {540--543},
     publisher = {mathdoc},
     volume = {220},
     number = {3},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_220_3_a9/}
}