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This material is based on work supported by the Italian Ministry of Education, University, and Research under the project “Calculus of Variations” (PRIN 2010-11) and by the European Research Council under Grant No. 290888 “Quasistatic and Dynamic Evolution Problems in Plasticity and Fracture”. The authors are members of the Gruppo Nazionale per l’Analisi Matematica, la Probabilità e le loro Applicazioni (GNAMPA) of the Istituto Nazionale di Alta Matematica (INdAM).
© 2017 by De Gruyter.
