Katoch, B S, et al. “Performance of Selected Strains of Lactobacillus Bulgaricus, Streptococcus Lactis and Saccharomyces Cerevisiae Alone and in Different Combinations in Broilers”. The Indian Journal of Animal Sciences, vol. 68, no. 2, June 2012, https://epubs.icar.org.in/index.php/IJAnS/article/view/19818.