Karpińska, Dominika, and Mieczysław Kunz. “Light Pollution in the Night Sky of Toruń in the Summer Season”. Bulletin of Geography. Physical Geography Series, no. 17 (December 31, 2019): 91–100. Accessed February 14, 2025. https://apcz.umk.pl/BOGPGS/article/view/28780.