@article{IVM_1985_3_a3,
     author = {N. Ya. Krupnik},
     title = {$Phi$-admissible perturbations of generalized operators of local type},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {29--39},
     publisher = {mathdoc},
     number = {3},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1985_3_a3/}
}