1. Aplasia of the ductuli efterentes - a new sterilizing congenital syndrome in the bull;Blom;Nord. Vet. Med.,1982
2. Morphological evaluation of sperm abnormalities in bulls, 2. A proposal for a new classification of sperm abnormalities;Blom;Medycyna Weterynaryjna.,1981
3. The etiology of spermiostasis in the bull;Blom;Nord. Vet. Med.,1960