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Goldman, B. D. (2001). Mammalian Photoperiodic System: Formal Properties and Neuroendocrine Mechanisms of Photoperiodic Time Measurement. Journal of Biological Rhythms, 16(4), 283–301.
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Hansen, J. (2001). Light at Night, Shiftwork, and Breast Cancer Risk. JNCI Journal of the National Cancer Institute, 93(20), 1513–1515.
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IDA. (2006). Dark-Sky Park Program. edited by International Dark-Sky Association, , 11.
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IDA. (2013). Dark Sky Community Criteria. edited by International Dark-Sky Association, .
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Immelmann, K., K. R. Scherer, C. Vogel, & P. Schmoock,. (1988). Psychobiologie. Grundlagen des Verhaltens. Psychobiologie. Grundlagen des Verhaltens, , 888.
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