Kalita, E.A. (2002) “Morrey Regularity of Solutions of Nonlinear Elliptic Systems of Arbitrary Order with Restrictions on the Modulus of Ellipticity”,
Ukrains’kyi Matematychnyi Zhurnal, 54(11), pp. 1452–1466. Available at:
https://umj.imath.kiev.ua/index.php/umj/article/view/4184 (Accessed: 26 April 2025).