1. Denkschriften der Schweiz;Naegeli;Naturforsh., Ges.,1893
2. The Bactericidal Action of Pure Metals and Metal Fillings;Sheppard;Dental Cosmos,1935
3. Microorganisms of the Human Mouth;Miller,1890
4. The Bactericidal Action of Pure Metals and Metal Fillings;Sheppard;Dental Cosmos,1935
5. The Science of Dental Materials;Skinner,1947