1. Erhvervsbetingede eksemer;Hjorth;Månedskr prakt Iaegegern,1979
2. Avnstorp C Cementeksem blandt danske arbejdere beskaeftiget pã byggepladsen og i industrien (English summary included) Ph.D. thesis University of Copenhagen 1983
3. Reduction of chromate in cement by iron sulfate;Fregert;Contact Dermatitis,1979
4. The prevalence of cement eczema in Denmark before and after the addition of ferrous sulfate to Danish cement;Avnstorp;Acta Dermato-venereologica