1. Elliptic Partial Differential Equations and Quasiconformal Mappings in the Plane;Astala,2009
2. Extremal mappings of finite distortion;Astala;Proc. Lond. Math. Soc.,2005
3. Convexity conditions and existence theorems in nonlinear elasticity;Ball;Arch. Ration. Mech. Anal.,1977
4. Some open problems in elasticity;Ball,2002
5. Optimization Theory and Applications: Problems with Ordinary Differential Equations;Cesari,1983