@article{VMUMM_2022_4_a9,
     author = {Ya. A. Granilshchikova and A. A. Shkalikov},
     title = {Spectral properties of a differential operator with involution},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {67--71},
     publisher = {mathdoc},
     number = {4},
     year = {2022},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2022_4_a9/}
}