@article{IVM_1991_6_a14,
     author = {T. K. Katsaran},
     title = {Application of the method of similar operators in the study of the spectral properties of differential operators of {Sturm--Liouville} type},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {72--75},
     publisher = {mathdoc},
     number = {6},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1991_6_a14/}
}