Maintenance work on the ZORA databases is scheduled for Wednesday 22 May 2019 from 20:00-22:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
Chipot, M; Müller, S (1999). Sharp energy estimates for finite element approximations of non-convex problems. In: Argoul, P; Frémond, M; Nguyen, Q S. Variations of domain and free-boundary problems in solid mechanics (Paris, 1997). Dordrecht: Kluwer Academic, 317-325.