M. Z. U. Khan, T. N. Pasha, K. Javed, M. J. Basra, and M. A. Jabbar. "EFFECT OF VARYING DIETARY LEVELS OF CALCIUM AND PHOSPHORUS ON APPARENT DIGESTIBILITY AND RETENTION OF MACRO AND MICRO-MINERALS IN LACTATING SAHIWAL COWS." Journal of Animal and Plant Sciences, vol. 30, no. 3, 2020, pp. 527-536, doi:10.36899/JAPS.2020.3.0062.