1. Association for Swedish Livestock Breeding and Production 1980 Report 104, 45-46
2. Gliedmaßen und Klauengesundheit von Rindern unterschiedlicher Herkunft in industriemäßig produzierenden Milchviehanlagen;Berger;Mh. Vet. Med.,1977
3. Some observations on the incidence of lameness in dairy cattle in Somerset;Eddy;Vet. Rec.,1980
4. Disease incidence in tied and loose housed dairy cattle;Ekesbo;Acta Agric. Scand.,1966