1. Release of nickel from silver coins;Bang Pedersen;Acta Dermato-venereolagica (Stockholm),1974
2. Solubility, of cobalt in cement;Fregert;Contact Dermatitis,1978
3. Allergy to chromium, nickel and cobalt;Fregert;Acta Dermato-venereologica,1966
4. The Danish Twin Register;Hauge;Acta Geneticae Medicae et Gemellologiaee,1968