@article{INTF_1989_64_a0,
     author = {G. V. Rozenblum and M. Z. Solomyak and M. A. Shubin},
     title = {Spectral theory of differential operators},
     journal = {Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Fundamental'nye Napravleniya },
     pages = {5--242},
     publisher = {mathdoc},
     volume = {64},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTF_1989_64_a0/}
}