@article{FAA_2020_54_2_a7,
     author = {V. S. Rabinovich},
     title = {Essential spectrum of one-dimensional {Dirac} operators with delta-interactions},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {90--94},
     publisher = {mathdoc},
     volume = {54},
     number = {2},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2020_54_2_a7/}
}