Stichting Mathematisch Centrum
Stichting Mathematisch Centrum. Rekenafdeling

Hofsommer, D. J., Potters-Alleda, G. C. F. E., & Potters, M. L. (1959). The expansion of the earth's topography in a series of spherical harmonics. Stichting Mathematisch Centrum. Rekenafdeling. Stichting Mathematisch Centrum.