TY  - JOUR
A1  - Pasquali, A.
A1  - Nota, A.
A1  - Langer, Norbert
A1  - Schulte-Ladbeck, R. E.
A1  - Clampin, M.
T1  - R4 and its circumstellar nebula : evidence for a binary merger?
Y1  - 1999
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/21869
ER  -