1. Antibody formation in Zwoegerziekte, a slow infection in sheep;Boer;J. Inimunol.,1970
2. Classification and nomenclature of viruses;Fenner;Intervirol.,1976
3. Complement-fixing antibodies in sera of sheep affected with Visna and Maedi;Gudnadóttir;J. Immunol.,1967
4. Immunofluorescence and cytochemical studies of Visna virus in cell culture;Harter;J. Virol.,1967
5. Beitrag zur kollektiven Behandlung pharmakologischer Reihenversuche;Kärber;Naunyn-Schmiedeberg's Arch. exp. Path. Pharmak.,1931