G. Halberg

[Effect of solar activity on the physiological rhythms of biological systems].

T. Breus, G. Cornélissen, G. Halberg, 1995, Biofizika.

[Skiing injuries. Review over the winter of 1990-1991 in a clinic in the French Alps].

S. Galatius-Jensen, P. Schydlowsky, G. Halberg, 1993, Ugeskrift for laeger.