00909nam0-22002771i-450-990001257560403321000125756FED01000125756(Aleph)000125756FED0100012575620000920d1977----km-y0itay50------baeng<<The >>Deficiency Index Problem for Powers of Ordinary Differential Expressionsde Kau fmann and ReadBerlin [etc.]Springer-Verlag1977Lecture Notes in Mathematics621Kaufman,Robert McKenzie<1941- >349749Kaufman,Robert McKenzie<1941- >Read,T.ITUNINARICAUNIMARCBK990001257560403321C-20-(62119633bisMA1MA1Deficiency Index Problem for Powers of Ordinary Differential Expressions355427UNINAING01