01239nam a2200361 i 450099100136634970753620020507192151.0931220s1987 ||| ||| | eng 354017902Xb10837565-39ule_instLE01311171ExLDip.to Matematicaeng515.7222AMS 35B25AMS 35PAMS 47A40AMS 47E05AMS 81C10 (1985)Weidmann, Joachim41951Spectral theory of ordinary differential operators /Joachim WeidmannBerlin ; Heidelberg :Springer-Verlag,1987250 p. ;24 cm.Lecture notes in mathematics,0075-8434 ;1258Ordinary differential operatorsScattering theorySingular perturbationsSpectral theory.b1083756523-02-1728-06-02991001366349707536LE013 35P WEI11 (1987)12013000003351le013-E0.00-l- 05550.i1094728028-06-02Spectral theory of ordinary differential operators78529UNISALENTOle01301-01-93ma -engxx 01