P K Mallick, A K Ghosh, Harpal Singh. Sire evaluation (single and multi-trait) in terms of relative eficiency, error variance and spearman’s coeficient of rank correlation and product moment correlation in Red Sindhi cattle. J. Livest. Biod. 2025;7(1). Accessed June 11, 2026. https://epubs.icar.org.in/index.php/JLB/article/view/157889