@article{IVM_1989_1_a6,
     author = {P. A. Cojuhar'},
     title = {On the finiteness of the discrete spectrum of some matrix pseudodifferential operators},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {42--50},
     publisher = {mathdoc},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1989_1_a6/}
}