Boldman K. G. and Freeman A. E. 1990. Adjustment for heterogeneity of variances by herd production in dairy cow and sire evaluation. Journal of Dairy Science, 73: 503-512.
Carriedo J. A., Baro J. A., De La Fuente L. F. and San Primitivo F. 1995. Genetic parameters for milk yield in dairy sheep. Journal of Animal Breeding and Genetics, 112: 59- 63.
Costa C. N. 1999. An investigation into heterogeneity of variance for milk and fat yields of Holstein cows in Brazilian herd environments. Genetics and Molecular Biology, 22(3): 375-381.
De Veer J. C. and Van Veleck L. D. 1987. Genetic parameters for first lactation milk yields at three levels of production. Journal of Dairy Science, 70: 1434-1441.
Everett R. W., Keown J. F. and Taylor J. F. 1982. The problem of heterogeneous within herd error variances when identifying elite cows. Journal of Dairy Science, 65 (Suppl. 1): 100 (Abstract).
Gengler N., Wiggans G. R. and Gillon A. 2004. Estimated heterogeneity of phenotypic variance of test-day yield with a structural variance model. Journal of Dairy Science, 87: 1908-1916.
Hill W. G. 1984. On selection among groups with heterogeneous variance. Animal Production, 39: 473-477.
Hoaglin D. C. and Welsch R. E. 1978. The hat matrix in regression and ANOVA. American Statistician, 32: 17-22.
Huquet B., Leclerc H. and Ducrocq V. 2012. Modelling and estimation of genotype by environment interactions for production traits in French dairy cattle. Genetics Selection Evolution, 44: 35.
Ibanez M. A., Carabano M. J. and Alenda R. 1999. Identiﬁcation of sources of heterogeneous residual and genetic variances in milk yield data from the Spanish Holstein-Friesian population and impact on genetic evaluation. Livestock Production Science, 59: 33-49.
Ibanez M. A., Carabano M. J., Foulley J. L. and Alenda R. 1996. Heterogeneity of herd-period phenotypic variances in the Spanish Holstein Friesian cattle: sources of heterogeneity and genetic evaluation. Livestock Production Science, 45: 137-147.
Kominakis A., Rogdakis E. and Koutsotolis K. 1998. Genetic parameters for milk yield and litter size in Boutsiko dairy sheep. Canadian Journal of Animal Science, 78: 525-532.
Markus S., Mantysaari E. A., Stranden I., Eriksson J. A. and Lidauer M. H. 2014.Comparison of multiplicative heterogeneous variance adjustment models for genetic evaluations. Journal of Animal Breeding and Genetics, 22: 61‐65.
Meinert T. R., Pearson R. E., Vinson W. E. and Cassell B. G. 1988. Prediction of daughter’s performance from dam’s cow index adjusted for within-herd variance. Journal of Dairy Science, 71: 2220– 2231.
Nakaoka H., Gailard C., Ibi T., Sasae Y. and Sasaki Y. 2008. Effectiveness of adjusting for heterogeneity of variance in genetic evaluation of Japanese Black cattle. Animal Science Journal, 79: 645–654.
Nikolaou M., Kominakis A. P., Rogdakis E. and Zampitis S. 2004. Effect of mean and variance heterogeneity on genetic evaluations of Lesbos dairy sheep. Livestock Production Science, 88: 107-115.
Robert-Granie C., Bonaıti B., Boichard D. and Barbat A. 1999. Accounting for variance heterogeneity in French dairy cattle genetic evaluation. Livestock Production Science, 60: 343-357.
SAS Institute. 2009. User’s Guide: Statistics, Version 9.1 Edition. SAS Inst., Inc., Cary, NC.
Strabel T., Jankowski T. and Jamrozik J. 2006. Adjustments for heterogeneous herd-year variances in a random regression model for genetic evaluations of Polish Black-and-White cattle. Journal of Applied Genetics, 47: 125-130.
Szydowski M. and Szwaczkowski T. 1993. The effect of grouping herds according to production level on the heritability of milk traits in cattle. Animal Science Papers and Reports, 11: 295–300.
Urioste J. I., Gianola D., Rekaya R., Fikse W. F. and Weigel K. A. 2001. Evaluation of extent and amount of heterogeneous variance for milk yield in Uruguayan Holsteins. Journal of Animal Science, 72: 259-268.
Van Vleck L. D. 1987. Selection when traits have different genetic and phenotypic variances in different environments. Journal of Dairy Science, 70: 337-344.
Varkoohi S., Mehrabani-Yeganeh H., Miraei-Ashtiani S. R. and Ghavi Hossein-Zadeh N. 2007. Heterogeneity of variance for milk traits at climitical regions in Holstein dairy cattle in Iran and the best methods for data transformation. Pakistan Journal of Biological Science, 10(9): 1556-1558.
Vinson W. E. 1987. Potential bias in genetic evaluations from differences in variation within herds. Journal of Dairy Science, 70(11): 2450-2455.
Visscher P. M., Thompson R. and Hill W. G. 1991. Estimation of genetic and environmental variances for fat yield in individual herds and an investigation into heterogeneity of variance between herds. Livestock Production Science, 28: 273.
Weigel K. A. and Gianola D. 1993. A computationally simple Bayesian method for estimation of heterogeneous variances. Journal of Dairy Science, 76: 1455-1465.
Winkelman A. and Schaeffer L. R. 1988. Effect of heterogeneity on dairy sire evaluation. Journal of Dairy Science, 71: 3032-3039.