Cornelssen G. week, inherited in neonatal human twins, found also in geometric pulsations in isolated Antarctica / G.Cornelssen,M.Engebretson,D.Johnson, 2002. - 18 p. - Текст : непосредственный.
Halberg F. Transdisciplinary biological-heliogeophysica relations at weekly, half-yearly and schwabe-and hale-cycle frequencies / F.Halberg,G.Cornelissen,M.Engebretson, 2002. - 5 p. - Текст : непосредственный.