Nested Mixin-Methods in Agora. - Patrick Steyaert; Wim Codenie; Theo D'Hondt; Koen De Hondt; Carine Lucas; Marc Van Limberghen (ECOOP, 1993)

Encapsulation and composition as orthogonal operators on mixins: a solution to multiple inheritance problems. - Marc Van Limberghen; Tom Mens (Object Oriented Syst., 1996)