Sturm-Liouville Theory Past and Present - Amrein, Werner O.; Hinz, Andreas M.; Pearson, David P.; SpringerLink (Online service) (Basel : Birkhauser Verlag, 2005)
Keywords: Sturm-Liouville equation -- Congresses; Differential equations -- Qualitative theory -- Congresses; Differential operators; Mathematics; Analysis; Partial Differential Equations