1. Linear and Quasilinear Elliptic Equations;Ladyzhenskaya,1968
2. Multiple Integrals in the Calculus of Variations;Morrey,1966
3. Index boundedness condition for mappings with bounded distortion;Reshetnyak;Siberian Math. J.,1968
4. On the asymptotic properties of subsolutions of quasilinear equations of elliptic type and mappings with bounded distortion;Mikljukov;Mat. Sb.,1980
5. Conformally invariant variational integrals;Granlund,1981