Malik, A. A., Fazili, M. R. and Khatun, A. (2021) “Levels of Serum Nitric Oxide and Ascorbic Acid in Early Pregnant and Non-pregnant Sheep During Breeding Season”, International Journal of Livestock Research. India, 11(8), pp. 28–32. doi: 10.5455/ijlr.20210116093959 .