Ultraviolet stellar spectra obtained with the Utrecht orbiting stellar spectrophotometer S 59 aboard the ESRO TD-1 A satellite. Hoekstra, R. ; van der Hucht, K. A. ; de Jager, C. ; Kamperman, T. ; Lamers, H. J. Abstract Publication: Space Research Conference Pub Date: 1973 Bibcode: 1973spre.conf..871H