Chmielewski, Szymon; Lee, Danbi J.; Tompalski, Piotr; Chmielewski, Tadeusz J.; Wężyk, Piotr (4 November 2015). "Measuring visual pollution by outdoor advertisements in an urban street using intervisibility analysis and public surveys". International Journal of Geographical Information Science. 30 (4): 801–818. doi:10.1080/13658816.2015.1104316. S2CID425572.
Chmielewski, Szymon; Lee, Danbi J.; Tompalski, Piotr; Chmielewski, Tadeusz J.; Wężyk, Piotr (4 November 2015). "Measuring visual pollution by outdoor advertisements in an urban street using intervisibility analysis and public surveys". International Journal of Geographical Information Science. 30 (4): 801–818. doi:10.1080/13658816.2015.1104316. S2CID425572.