1. Phenotypic and genetic parameters of some economic traits in Haryana cattle;Balaine;Ind. J. Dairy Sci.,1971
2. Barbosa, P.F., 1991. Genetic quantitative analysis of growth traits and fertility in female of Canchim breed. Ribeirão Preto, SP-Brazil. PhD-Faculdade de Medicina de Ribeirão Preto, p. 237.
3. Boldman, K.G., Kriese, L.A., Van Vleck, L.D., Kachman, S.D.A., 1993. Manual for Use of MTDFREML – A Set of Programs to Obtain Estimates of Variance and Covariances. USDA-ARS, p. 120.
4. A derivative-free approach for estimating variance components in animal models by restricted maximum likelihood;Graser;J. Anim. Sci.,1987
5. Efficiency of production and cow size in beef cattle;Kress;J. Anim. Sci.,1969