1. A new sterilizing and hereditary defect (the “Dag-defect”) located in the bull sperm tail;Blom;Nature (Lond.),1966
2. Ultrastrukturen af en arvelig betinget spermiehaledefekt (“Dag-defekten”) hos tyren;Blom,1966
3. The ultrastructure of a new sterilizing defect (the “Dag-defect”) in the bull sperm tail;Blom,1966
4. Zink as a possible causal factor in the sterilizing sperm tail defect, the “Dag-defect”, in Jersey bulls;Blom,1976
5. Lys- og elektronmikroskopisk undersøgelse af et tilfælde af den såkaldte Dag-defekt i tyrespermiets hale;Koefoed-Johnsen;Kg. Vet.- og Landbohøjsk., Inst. Sterilitetsforskn. Årsberetn,1970