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@article{AA_1997_9_6_a2, author = {M. Sh. Birman}, title = {The discrete spectrum in gaps of the perturbed periodic {Schr\"odinger} {operator.~II.} {Nonregular} perturbations}, journal = {Algebra i analiz}, pages = {62--89}, publisher = {mathdoc}, volume = {9}, number = {6}, year = {1997}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AA_1997_9_6_a2/} }
TY - JOUR AU - M. Sh. Birman TI - The discrete spectrum in gaps of the perturbed periodic Schr\"odinger operator.~II. Nonregular perturbations JO - Algebra i analiz PY - 1997 SP - 62 EP - 89 VL - 9 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_1997_9_6_a2/ LA - ru ID - AA_1997_9_6_a2 ER -
M. Sh. Birman. The discrete spectrum in gaps of the perturbed periodic Schr\"odinger operator.~II. Nonregular perturbations. Algebra i analiz, Tome 9 (1997) no. 6, pp. 62-89. http://geodesic.mathdoc.fr/item/AA_1997_9_6_a2/