Functionals with linear growth in the calculus of variations. I. Mariano Giaquinta, Giuseppe Modica, Jiří Souček (1979) Commentationes Mathematicae Universitatis Carolinae
Functionals with linear growth in the calculus of variations. II. Mariano Giaquinta, Giuseppe Modica, Jiří Souček (1979) Commentationes Mathematicae Universitatis Carolinae