@article{IVM_1972_6_a13,
     author = {L. D. \`Eskin},
     title = {Discreteness of the spectrum of nonselfadjoint singular differential operators in a~space of vector functions},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {101--109},
     publisher = {mathdoc},
     number = {6},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1972_6_a13/}
}