@article{RM_1989_44_2_a3,
     author = {I. M. Krichever},
     title = {Spectral theory of two-dimensional periodic operators and its applications},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {145--225},
     publisher = {mathdoc},
     volume = {44},
     number = {2},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1989_44_2_a3/}
}