1. Prenatal survival in pigs. Part 1. Ovulation rate and its influence on prenatal survival and litter size in pigs;Wrathall,1971
2. Embryonic mortality;Scofield,1972
3. Embryonic death in cattle, sheep and pigs;Boyd;Vet. Bull.,1965
4. Does enhanced antigenecity of semen increase the litter size in pigs?;Almlid;Z. Tierzuchtg. Züchtgsbiol.,1981
5. Ein Zweiphasen-Verdünner in der Praxis der Schweinebesamung;Haeger;Dtsch. tierärztl. Wschr.,1971