1. Determination of milk urea by flow injection analysis;Andersson;J. Vet. Med. A,1986
2. An epidemiological study of hyperketonaemia in Swedish dairy cows: determinants and the relation to fertility;Andersson;Prev. Vet. Med.,1985
3. Effect of feeding silage with high butyric acid content on ketone body formation and milk yield in postparturient dairy cows;Andersson;Zentbl. VetMed. A,1985
4. årsmelding fra Helsekortutvalget. Helsekortordninga 1994 (Annual report from the Norwegian disease recording system 1994);Nor. VetTidsskr.,1995
5. Dirksen , G. 1994 Kontrolle von Stoffwechselstörungen bei Milchkühen an hand von Milchparametern Trenti , F. 35 45