G. Belz

发表

L. Santoro, M. Marroccoli, G. Valenti, 1995, "SP-153: Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete Proceedings Fifth International Conference Milwauk".

L. Coppola, M. Collepardi, R. Troli, 1998, "SP-178: Sixth CANMET/ACI/JCI Conference: FLy Ash, Silica Fume, Slag & Natural Pozzolans in Concrete".