1. de Cooman, G., Cozman, F.G., Moral, S., Walley, P. (Eds.), 1999. Proceedings of the First International Symposium on Imprecise Probabilities and Their Applications (ISIPTA’99). Imprecise Probabilities Project, Universiteit Gent, Belgium.
2. de Cooman, G., Walley, P. (Eds.), 1997–1999. The Imprecise Probabilities Project. .