1. L. Cesari,Sulle funzioni a variazione limitata, Ann. Scuola Norm. Sup. Pisa,5 (1936), pp. 299–313.
2. L.Cesari,Optimization Theory and Applications, Springer-Verlag (1983).
3. L.Cesari,Existence of discontinuous absolute minima for certain multiple integrals without growth properties, Rend. Accad. Naz. Lincei, Roma, to appear.
4. L. Cesari -P. Brandi -A. Salvadori,Discontinuous solutions in problems of optimization, Ann. Scuola Norm. Sup. Pisa,15 (1988), pp. 219–237;
5. L. Cesari -P. Brandi -A. Salvadori,Existence theorems concerning simple integrals of the calculus of variations for discontinuous solutions, Archive Rat. Mech. Anal.,98 (1987), pp. 307–328;