@article{FAA_2009_43_1_a3,
     author = {S. A. Nazarov},
     title = {The {Essential} {Spectrum} of {Boundary} {Value} {Problems} for {Systems} of {Differential} {Equations} in a {Bounded} {Domain} with {a~Cusp}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {55--67},
     publisher = {mathdoc},
     volume = {43},
     number = {1},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2009_43_1_a3/}
}