TY  - BOOK
AU  - Knowles I.W. Ed.
ED  - Conference on spectrol theory of differential operatirs (1981 : Alabama)
TI  - Proceeding on spectral theory of differential operations
T2  - North-Holland mathematics studies; 55
U1  - B33p1,N81, M1 
PY  - 1981///
CY  - Amsterdam
PB  - North-Holland       
KW  - Differential equations
ER  -