PRAJAPATI, A, et al. “Conservation of PtfA Gene Encoded Type IV Fimbrial Protein Among Circulating Pasteurella Multocida Serogroup A Strains Causing Pneumonia in Sheep”. The Indian Journal of Animal Sciences, vol. 91, no. 10, Oct. 2021, pp. 819–825, https://doi.org/10.56093/ijans.v91i10.117212.