1. Evaluation of a type appraisal program in Holsteins;Aitchison;J. Dairy Sci.,1972
2. Arnason , T. 1983 Genetic studies on conformation and performance of Icelandic toelter horses. III. Study on covariance matrices and breeding objectives by principal component analysis. Swedish University of Agricultural Sciences, Department of Animal Breeding and Genetics. 1-19
3. Genetic correlations among progeny groups for type traits, milk yield, yield persistency, and culling rates;Bar-Anan;J. Dairy Sci.,1983
4. Typ- und Eutermerkmale als Selektionskriterien in der Rinderzucht;Barria von;Züchtungskunde,1969