Halberg F, Smith H, Cornélissen G, Delmore P, Schwartzkopff O, the International BIOCOS Group . Hurdles to asepsis, universal literacy, and chronobiology-all to be overcome.  Neuro Endocrinol Lett. 2000 Jan;  21(2): 145-160

Halberg F, Cornélissen G, Burioka N, Katinas G, Sampson M, Schwartzkopff O. Circasemicentennial Season's Appreciations.  Neuro Endocrinol Lett. 2000 Jan;  21(1): 59-68

Halberg F, Cornélissen G, Schwartzkopff O, Cagnoni M, Perfetto F, Tarquini R. The Story Behind: Chronorisk/Circadian-Circannual (Macey, 1994).  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 102-104

Halberg F, Cornélissen G, Schwartzkopff O, Cagnoni M, Perfetto F, Tarquini R. The Story Behind: Chronome/chrone.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 27-29

Halberg F, Cornélissen G, Schwartzkopff O, Cagnoni M, Perfetto F, Tarquini R. The Story Behind: Pineal mythology and chronorisk. The Swan Song of Brunetto TARQUINI.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 91-100

Halberg F, Cornélissen G, Sampson M, Katinas G, Schwartzkopff O. Season's Appreciations 1998.  Neuro Endocrinol Lett. 1999 Jan;  20(1-2): 31-43