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@article{FAA_1991_25_2_a18, author = {M. Sh. Birman}, title = {The discrete spectrum in the gaps of a second-order perturbed periodic operator}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {89--92}, publisher = {mathdoc}, volume = {25}, number = {2}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1991_25_2_a18/} }
TY - JOUR AU - M. Sh. Birman TI - The discrete spectrum in the gaps of a second-order perturbed periodic operator JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1991 SP - 89 EP - 92 VL - 25 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1991_25_2_a18/ LA - ru ID - FAA_1991_25_2_a18 ER -
M. Sh. Birman. The discrete spectrum in the gaps of a second-order perturbed periodic operator. Funkcionalʹnyj analiz i ego priloženiâ, Tome 25 (1991) no. 2, pp. 89-92. http://geodesic.mathdoc.fr/item/FAA_1991_25_2_a18/