@article{DE_1980_16_11_a15,
     author = {M. V. Suchkov},
     title = {The localization principle for the {Laplace} operator with piecewise constant coefficients on the surface of discontinuity of coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2050--2061},
     publisher = {mathdoc},
     volume = {16},
     number = {11},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1980_16_11_a15/}
}