Kabir, Md. Humayun, et al. “Prevalence and Identification of Subclinical Mastitis in Cows at BLRI Regional Station, Sirajganj, Bangladesh”. Journal of Advanced Veterinary and Animal Research, vol. 4, no. 3, Jan. 2018, pp. 295-00, https://www.banglajol.info/index.php/JAVAR/article/view/34335.