CHAWLA, RAJIV, et al. “Influence of Berseem As Beta-Carotene Source on Growth and Circulatory Levels of Vitamin A in Crossbred Calves”. The Indian Journal of Animal Sciences, vol. 71, no. 2, Jan. 2014, https://epubs.icar.org.in/index.php/IJAnS/article/view/36449.