A concise survey of L. Dérer's work on biorhythmicity. Ruttkay-Nedecký I. Biography 2003; 24(6): 11-12 PubMed PMID: 15077066 Keywords: History, 19th Century, History, 20th Century, Humans, Neuroendocrinology:history, Periodicity, Slovakia,. Citation ..... Read abstract Full text PDF