«Wilder, J. Basimetric approach (law of initial value) to biological rhythms, Annals of the New York Academy of Sciences, 1962, 98, 1211-1228». Ann. N. Y. Acad. Sci.98: 1211-20. octubre de 1962. PMID14000687. doi:10.1111/j.1749-6632.1962.tb30629.x.
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«Wilder, J. Basimetric approach (law of initial value) to biological rhythms, Annals of the New York Academy of Sciences, 1962, 98, 1211-1228». Ann. N. Y. Acad. Sci.98: 1211-20. octubre de 1962. PMID14000687. doi:10.1111/j.1749-6632.1962.tb30629.x.