Abdurakhim Khojiyev Abdurakhmonovich, Turdiyeva Ugiloy Komiljon qizi, and Badalov Jamshidbek Erkinjon o’g’li. “CHEMICAL COMPOSITION OF LEATHER USED FOR TRANSFORMATION ASSORTMENT AND RESEARCH OF PHYSICAL-MECHANICAL PROPERTIES”. "XXI ASRDA INNOVATSION TEXNOLOGIYALAR, FAN VA TAʼLIM TARAQQIYOTIDAGI DOLZARB MUAMMOLAR" Nomli Respublika Ilmiy-Amaliy Konferensiyasi, vol. 1, no. 11, Nov. 2023, pp. 48-56, https://universalpublishings.com/index.php/itfttdm/article/view/2552.