On the smoothness of weak solutions of strong-nonlinear nondiagonal elliptic systems (the two-dimensional case)
A. A. Arkhipova

Литература
1.	A. Arkhipova, “Solvability problem for nondiagonal elliptic systems with quadratic nonlinearity in the gradient (the two-dimensional case)”, Zap. Nauchn. Semin. POMI, 295, 2003, 5–17
2.	A. Arkhipova, “Quasireverse Hölder inequalities and a priori estimates for quasilinear elliptic systems”, Atti Accad. Naz. Lincei Cl. Sci. Fis. Mat. Natur. Rend. Lincei (9) Mat. Appl., 14 (2003), 91–108
3.	J. Freshe, “On two-dimensional quasilinear elliptic systems”, Manuscr. Math., 28 (1979), 21–50