1. Bonnet, R.M.: 1996, C. de Jager, Europe, space, and the Sun. Solar Phys. 169, 233. DOI. ADS.
2. Callebaut, D., de Jager, C., Duhau, S.: 2013, Reply to “The influence of planetary attractions on the solar tachocline” by N. Scafetta, O. Humlum, J.E. Solheim, K. Stordahl. J. Atmosph. Solar-Terr. Phys. 102, 372. DOI. ADS.
3. de Jager, C.: 1946, Note on the distribution of light on Jupiter’s bright satellites. Bull. Astron. Inst. Neth. 10, 81. ADS.
4. de Jager, C.: 1952, The hydrogen spectrum of the Sun. Rech. Astron. l’Obs. d’Utrecht 1. ADS.
5. de Jager, C.: 1953, The photo-electric star photometer of the Utrecht Observatory. Bull. Astron. Inst. Neth. 12, 93. ADS.