Yaremenko, Mykola I. “The Holder Continuity of the Solutions to Quasi-Linear System of Elliptic Partial Differential Equations With Singular Coefficients”. Proyecciones (Antofagasta, On line) 41, no. 1 (January 28, 2022): 197-216. Accessed April 27, 2024. https://www.revistaproyecciones.cl/index.php/proyecciones/article/view/4531.