00537nam a2200181Ia 4500082002000000100002200020245005700042260003400099300002000133490004000153500000500193690000600198700000500204952010200209964001700311921001000328999001700338  a515.35bW418.ST  aWeidmann, Joachim  aSpectral theory of ordinary differential operatorsb  aBerlinbSpringer-Verlagc1987  avi, 303p. Index  aLecture notes in Mathematicsv 1258  a  a   a  00104070aISIbISId1998-09-30l0o515.35 W418.STpDP21077r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a14904  c14904d14904