A. Tiryaki, “Caccioppoli-type estimates for a class of nonlinear differential operators”, Ukr. Mat. Zhurn., vol. 70, no. 10, pp. 1429–1438, Oct. 2018, Accessed: Feb. 13, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/1646