1. A new insemination appliance;Aamdal;Anim. Breed. Abstr.,1967
2. Fast thawing of bull semen frozen in straws;Aamdal,1968
3. Fast thawing of semen frozen in straws;Aamdal;Zuehthygiene,1968
4. Insemination experiment with a new type of insemination equipment for straws;Aamdal;Anim. Breed. Abstr.,1969
5. Adler, H. C. 1960. Deep-freezing of bovine semen in cellophane straws and storage in liquid air. (Summary) Page 243 in Arsberetning, Den kgl. Vet.- og Landbohøjskoles Sterilitetsforskn.