@article{SM_2003_194_6_a5,
     author = {V. N. Kolokoltsov},
     title = {Schr\"odinger operators with singular potentials and magnetic fields},
     journal = {Sbornik. Mathematics},
     pages = {897--917},
     publisher = {mathdoc},
     volume = {194},
     number = {6},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2003_194_6_a5/}
}