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  Author (up) Title Year Publication Volume Pages Links
Bergen; F.; Abs, M. Etho-ecological study of the singing activity of the blue tit (parus caeruleus), great tit (parus major) and chaffinch (fringilla coelebs). 1997 J Ornithol 138 451-467 details   openurl
Brainard, G.C.; Rollag, M.D.; Hanifin, J.P. Photic Regulation of Melatonin in Humans: Ocular and Neural Signal Transduction 1997 Journal of Biological Rhythms 12 537-546 details   doi
Crawford, D. L. Photometry: teminology and units in the lighting and astronomical sciences 1997 The Observatory 117 14–18 details   url
Elvidge, C. D.; Baugh, K. E.; Kihn, E. A.; Kroehl, H. W.; Davis, E. R. Mapping city lights with nighttime data from the DMSP Operational Linescan System. 1997 Photogrammetric Engineering and Remote Sensing 63 727–734 details   openurl
Elvidge, C., Bauch, K.; Hobson, V.; Kihn, E.; Kroehl, H.; Davis, E.; Cocero, D. Satellite inventory of human settlements using nocturnal radiation emissions: a contribution for the global toolchest 1997 Global Change Biology 3 387–395 details   openurl
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