@article{RM_2007_62_3_a15,
     author = {I. A. Taimanov and S. P. Tsarev},
     title = {Two-dimensional {Schr\"odinger} operators with fast decaying potential and multidimensional $L_2$-kernel},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {631--633},
     publisher = {mathdoc},
     volume = {62},
     number = {3},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2007_62_3_a15/}
}