YLINEN, K. Dual C*-algebras, weakly semi-completely continuous elements, and the extreme rays of the positive cone. Annales Fennici Mathematici, [S. l.], n. 599, 1975. DOI: 10.5186/aasfm.1975.599. Disponível em: https://afm.journal.fi/article/view/134235. Acesso em: 25 nov. 2024.