TY  - BOOK
A1  - Savin, Anton
A1  - Schulze, Bert-Wolfgang
A1  - Sternin, Boris Ju.
T1  - On the invariant index formulas for spectral boundary value problems
T2  - Preprint / Universität Potsdam, Institut für Mathematik
Y1  - 1998
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/22512
VL  - 1998, 18b
PB  - Univ.
CY  - Potsdam
ER  -