@article{MZM_2012_92_5_a13,
     author = {S. S. Mirzoyev and A. R. Aliev and L. A. Rustamova},
     title = {Solvability {Conditions} for {Boundary-Value} {Problems} for {Elliptic} {Operator-Differential} {Equations} with {Discontinuous} {Coefficient}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {789--793},
     publisher = {mathdoc},
     volume = {92},
     number = {5},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2012_92_5_a13/}
}