Short title: Zijlstra et al. (1991)
Authors: Zijlstra, A. A. Gaylard, M. J. te Lintel Hekkert, P. Menzies, J. Nyman, L.-A. Schwarz, H. E.
Journal: Astronomy and Astrophysics (ISSN 0004-6361), vol. 243, no. 1, March 1991, p. L9-L12.
Bibcode:
1991A&A...243L...9Z