Anna Gobarova, Kamil Kazeev, Alexander Zhadobin, Anastasia Fedorenko, Sergey Kolesnkov. Effect of Keeping Animals in Zoo Enclosures on Changes in Physical Properties of Soils. JISSS. 2023;71(2):119-125. Accessed October 26, 2025. https://epubs.icar.org.in/index.php/JISSS/article/view/140784