@article{VSGTU_2017_21_4_a1,
     author = {D. V. Kornienko},
     title = {On a spectral problem for a system of~differential equations of mixed type},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {611--632},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_2017_21_4_a1/}
}