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Author Bissonnette, T.H. openurl 
  Title Modification of Mammalian Sexual Cycles Type Journal Article
  Year 1935 Publication Journal of Experimental Biology Abbreviated Journal  
  Volume 12 Issue Pages 315-320  
  Keywords Animals  
  Abstract 1. Cases are given in which female ferrets, already coming into, or in, oestrus as the result of artificially increased lighting in winter and spring, underwent regression or were retarded in their activation by reduction of either intensity or duration of daily illumination.

2. In some cases activation was resumed when light time or intensity was increased again.

3. These results are taken to indicate that, in female ferrets, any inherent rhythm or cycle of sexual activity is modified either naturally or artificially by changes of the cycles of duration and intensity of the light to which they are exposed daily, and so made to correspond in phases with the seasons, or changed therefrom. The rising daily illumination in spring and the falling one in late summer and autumn probably accelerate and retard the sexual activity of the female ferret, or accelerate the onset of anoestrus in late summer and autumn.

4. The data on modification of sexual cycles or activity in ferrets, so far obtained, are consistent with these conclusions.
 
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  Call Number GFZ @ kyba @ Serial 2397  
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Author Rawson, H.E. openurl 
  Title A bird's song in relation to light Type Journal Article
  Year 1932 Publication Transactions of the Hertfordshire Natural History Society Field Club Abbreviated Journal  
  Volume 17 Issue Pages 363-365  
  Keywords Animals  
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  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2423  
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Author Cottam, C. openurl 
  Title A shower of grebes Type Journal Article
  Year 1929 Publication The Condor Abbreviated Journal  
  Volume 31 Issue 1 Pages 80-81  
  Keywords Animals; Birds  
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  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2424  
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Author Sharpe, C.M. openurl 
  Title Brief Outline of the History of Electric Illumination in the District of Columbia Type Journal Article
  Year 1946 Publication Records of the Columbia Historical Society, Washington, DC Abbreviated Journal  
  Volume 48 Issue Pages 191-207  
  Keywords History  
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  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2430  
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Author Żagan, W.,; Skarżyński, K. openurl 
  Title Analysis of light pollution from floodlighting: Is there a different approach to floodlighting? Type Journal Article
  Year 2017 Publication Light and Engineering Abbreviated Journal  
  Volume 25 Issue 1 Pages 75-82  
  Keywords LED lighting  
  Abstract The research which was prepared for this paper was inspired by a real floodlit object. The main distinctive feature is connected with the directionality of its lighting. The „Sezam” building was one of the first to be illuminated in the opposite way to the usual manner of floodlighting. The analysis, based on the measurement of horizontal illuminance on the pavement in front of the building andof theluminance on the facade, leads to some very unusual conclusions. It goes deeper than merely the assessment of the phenomenon of light pollution in the context of floodlighting. Additionally, a short survey about the preferences of lighting directionality in floodlighting and the general concept of light pollution was conducted on a group of over a dozen people. It turned out that people are quite aware of the phenomenon of light pollution and they rather prefer illumination from floodlighting to be from bottom to top.  
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  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2450  
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