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@article{JRAM_1997__491_153945, author = {Gerald Teschl}, title = {Spectral deformations of {Jacobi} operators.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {1--16}, publisher = {mathdoc}, volume = {491}, year = {1997}, zbl = {0886.39005}, url = {http://geodesic.mathdoc.fr/item/JRAM_1997__491_153945/} }
Gerald Teschl. Spectral deformations of Jacobi operators.. Journal für die reine und angewandte Mathematik, Tome 491 (1997), pp. 1-16. http://geodesic.mathdoc.fr/item/JRAM_1997__491_153945/