1. Patch testing with amalgam at various concentrations;Mayenburg;Contact Dermatitis,1991
2. Amalgam-“Allergie”- Volkskrankheit oder Mythos;Aberer;Dermatosen,1991
3. New trends in the use of metals in jewellery;Vilaplana;Contact Dermatitis,1991
4. Hypersensitivity to mercury, nickel and chromium in relation lo dental materials;Burrows;Int Dent J,1986
5. Nickel hypersensitivity reactions in orthodontic patients, A literature review;Greppi;Univ Tor Dent J,1989