TY  - BOOK
AU  - Weidmann Joachim
TI  - Spectral theory of ordinary differntial operators
T2  - Lecture notes in mathematics; 1258
U1  - B33, M7 
PY  - 1987///
CY  - Berlin
PB  - Springer Verlag        
N1  - Bibliography 295-300p
ER  -