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2010
W. Jagusiak, Ptak, E., and Zarnecki, A., Relationship between fertility and intermediate optimum type traits in Polish HF, Proceedings of the World Congress on Genetics Applied to Livestock Production, vol. Species Breeding: Dairy cattle and buffalo breeding (jointly with Interbull) - Poster sessions, p. 0398, 2010.
1998
E. Ptak and Zarnecki, A., Estimation of breeding values of Polish Black-and-White cattle using test day yields., vol. 23: Opening: plenary; technology; transfer; beef cattle; dairy cattle; pigs., pp. 335–338, 1998. (292.25 KB)
1994
E. Ptak, Bieniek, J., and Jagusiak, W., Comparison of growth curves of purebred and crossbred rabbits., Proceedings of the World Congress on Genetics applied to Livestock Production, vol. 19. Selection and quantitative genetics; growth; reproduction; lactation; fish; fiber; meat., pp. 201–204, 1994. (215.1 KB)