@article{CMFD_2017_63_2_a7,
     author = {V. A. Yurko},
     title = {Spectral analysis of higher-order differential operators with discontinuity conditions at an interior point},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {362--372},
     publisher = {mathdoc},
     volume = {63},
     number = {2},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2017_63_2_a7/}
}