Variational approximation of functionals with curvatures and related properties. Bellettini, G. — 1997 Journal of Convex Analysis
Characterization and representation of the lower semicontinuous envelope of the elastica functional G. Bellettini; L. Mugnai — 2004 Annales de l'I.H.P. Analyse non linéaire
A notion of total variation depending on a metric with discontinuous coefficients M. Amar; G. Bellettini — 1994 Annales de l'I.H.P. Analyse non linéaire
Semicontinuity and relaxation properties of a curvature depending functional in 2D G. Bellettini; G. Dal Maso; M. Paolini — 1993 Annali della Scuola Normale Superiore di Pisa - Classe di Scienze