CARDINALI, Tiziana. Some characterizations of functions generating K-Schur concave sums and of K-concave set-valued functions. Annales Mathematicae Silesianae, [S. l.], v. 9, p. 17–28, 1995. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14201. Acesso em: 18 apr. 2025.