@article{MZM_1973_13_2_a8,
     author = {M. I. Elshin and L. I. Smolich},
     title = {On a~boundary-value problem solvability condition},
     journal = {Matemati\v{c}eskie zametki},
     pages = {247--250},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1973_13_2_a8/}
}