1. Cross-spectrally coherent ~10.5- and 21-year biological and physical cycles, magnetic storms and myocardial infarctions;Halberg;Neuroendocrinol Lett,2000
2. Non-photic solar associations of heart rate variability and myocardial infarction;Cornélissen;J Atmos Solar-Terr Phys,2002
3. Chronobiologic perspectives of international health care reform for the future of children;Halberg;Chronobiologia,1993
4. Season’s appreciations 2001;Halberg;Neuroendocrinol Lett,2002
5. Chronobiology and the delivery of health care;Halberg,1970