@article{ZNSL_1990_182_a7,
     author = {A. V. Sobolev},
     title = {The asymptotics of discrete spectrum for the {Schroedinger} operator in electric and homogeneous magnetic fields},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {131--141},
     publisher = {mathdoc},
     volume = {182},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1990_182_a7/}
}