Stichting Mathematisch Centrum
Stichting Mathematisch Centrum. Rekenafdeling

Barning, F. J. M. (1962). The numerical analysis of the light-curve of 12 lacertae : (Bulletin of the Astronomical Institute of the Netherlands, 17(1963), p 22-28). Stichting Mathematisch Centrum. Rekenafdeling. Stichting Mathematisch Centrum.