Mrowiec, Paweł, and Katarzyna Fuchs. “Assessment of the Validity of the Dog Fee in the Silesian Voivodeship - the authors’ Own Research”. Scientific Journal of Bielsko-Biala School of Finance and Law, vol. 22, no. 4, Feb. 2016, pp. 21-25, doi:10.5604/01.3001.0012.9684.