TY  - DATA
AU  - E. A. Coddington
AU  -  H. S. V. de Snoo
TI  - Regular Boundary Value Problems Associated with Pairs of Ordinary Differential Expressions
T2  - Lecture Notes in Mathematics
SN  - 9783540386704
PY  - 1981///
CY  - Heidelberg
PB  - Springer Berlin
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/BFb0089057
ER  -