Ocheretnyuk, E. V., and V. I. Slyn’ko. “Estimates of the Area of Solutions of the Pseudolinear Differential Equations With Hukuhara Derivative in the Space $\text{conv} (R^2)$”. Ukrains’kyi Matematychnyi Zhurnal 69, no. 2 (February 25, 2017): 189-214. Accessed April 19, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1686.