@article{DAN_1963_153_5_a12,
     author = {P. I. Perlin},
     title = {Extension to the three-dimensional case of a method of solving fundamental two-dimensional 
},
     journal = {Doklady Akademii Nauk},
     pages = {1033--1036},
     publisher = {mathdoc},
     volume = {153},
     number = {5},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_153_5_a12/}
}