Cavallini, M. "The Development of Trompes in Pyro-Metallurgical Plants in the Papal State," Historical Metallurgy 37/1 (2003): 38-42.

Cavallini, M. "The Development of Trompes in Pyro-Metallurgical Plants in the Papal State," Historical Metallurgy 37/1 (2003): 38-42.