1976 - Gijsbertha Reijnen - Legal aspects of outer space
1976 - Eric Zwijnenberg - Observation of brightness profiles of the soft X-ray background in Gemini, Orion and Eridanus
1975 - Piet de Korte - Spatial and spectral anomalies in the soft X-ray background
1975 - Peter Hoyng - Studies on hard X-ray emission from solar flares and on cyclotron radiation from a cold magnetoplasma
1973 - Henk van Beek - Development and performance of a solar hard X-ray spectrometer
1973 - Ad Deerenberg - Rocket-borne soft X-ray observation of Sco X-1
1972 - Bert Brinkman - Instrumentation for the detection of solar soft X-rays and the analysis of a solar event
1971 - Ton Scheepmaker - Primary cosmic-ray electron spectrum between 5 and ~300 GeV
1971 - Johan Bleeker - The diffuse X-ray sky
1971 - Jan Burger - Solar modulation of galactic cosmic-ray electrons
