@article{MZM_1990_48_1_a3,
     author = {V. M. Borok and L. V. Fardigola},
     title = {Nonlocal well-posed boundary-value problems in a~layer},
     journal = {Matemati\v{c}eskie zametki},
     pages = {20--25},
     publisher = {mathdoc},
     volume = {48},
     number = {1},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_1_a3/}
}