@article {2002, title = {The Calibration Method for Free-Discontinuity Problems on Vector-Valued Maps}, journal = {J. Convex Anal. 9 (2002) 1-29}, number = {SISSA;61/2001/M}, year = {2002}, publisher = {Heldermann Verlag}, abstract = {The calibration method is a classical minimality criterion, which has been recently adapted to functionals with free discontinuities by Alberti, Bouchitt{\'e}, Dal Maso. In this paper we present a further generalization of this theory to functionals defined on vector-valued maps.}, url = {http://hdl.handle.net/1963/3049}, author = {Maria Giovanna Mora} }