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- Copyright © Mathematical Association 2015
References
1.Ling, J. F., The variation in the length of daylight, Math. Gaz., 73 (December 1989) pp. 302–305.Google Scholar
2.Aravind, P. K., On the variation in the length of daylight in a simple model, Math. Gaz., 77 (March 1993) pp. 92–94.Google Scholar