TY  - BOOK
AU  - Sagan Hans
TI  - Boundary and Eigenvalue problems in mathematical physics
SN  - 0-486-66132-6
U1  - 530.15535 
PY  - 1961///
CY  - New York
PB  - Dover
KW  - Boundary value problems
KW  - Eigenvalues
KW  - Mathematical physics
ER  -