TY  - DATA
AU  - Everitt, W. N.
AU  - Markus, L.
TI  - Boundary value problems and symplectic algebra for ordinary differential and quasi-differential operators 
T2  - Mathematical Surveys and Monographs, 
SN  - 9781470412883 (online)
PY  - 1999///
CY  - Providence, R.I.
PB  - American Mathematical Society
KW  - Boundary value problems
KW  - Differential operators
KW  - Symplectic manifolds
N1  - Includes bibliographical references (p. 179-180) and indexes
UR  - https://doi.org/http://dx.doi.org/10.1090/surv/061
ER  -