The microstructure of Martensite and its implications for the shape-memory effect. - Approximation and oscillations. - Computation of twinning. - Computational results for a two-dimensional model of crystalline microstructure. - Local bifurcation theory for thermoelastic Bravais lattices. - Geometric parameters and the relaxation of multiwell energies. - Variational problems for crystals with defects. - The concept of a laminate. - Multiply twinned phases and microstructures in Ni-Al: A transmission electron microscopy study. - Phase transformations in ?-phase shape memory alloys studied by Hraem Alchemi and X-Ray diffraction. - On the problem of two wells. - Some remarks on separately convex functions. - New variational problems in the statics of liquid crystals. Language: English