1. E. Acerbi, N. Fusco. “Semicontinuity problems in the calculus of variations”. Arch. Rational Mech. Anal., 86 (1986), pp. 125–145.
2. L. Ambrosio. “Compactness for a special class of functions of bounded variation”. To appear in Boll. Un. Mat. Dal..
3. L. Ambrosio. “Existence theory for a new class of variational problems”. Submitted to Archive for Rational Mech. Analysis.
4. H. Brezis, J.M. Coron and E.H. Lieb. “Estimations d’energie des applications de ]R3 a valeurs dans S
2
”. C.R. Acad. Sc. Paris, 303 (1986), pp. 207–210.
5. H. Brezis, J.M. Coron and E.H. Lieb. “Harmonic maps with difects”. To appear in Comm. Math. Phys.,IMA preprint 253.