High resolution spectroscopy of the inner ring of SN 1987A
P. Gröningsson, C. Fransson, P. Lundqvist, N. Lundqvist, B. Leibundgut, J. Spyromilio, R. A. Chevalier, R. Gilmozzi, K. Kjær, S. Mattila and J. Sollerman
A&A, 479 3 (2008) 761-777
DOI: https://doi.org/10.1051/0004-6361:20077604
