El refaey, M. ., R. . Elkenany, and G. . Younis. “Virulotyping and Antibiograms of Pathogenic Escherichia Coli Isolated from Calves Suffering from Diarrhea”. Journal of Advanced Veterinary Research, vol. 13, no. 9, Nov. 2023, pp. 1901-6, https://advetresearch.com/index.php/AVR/article/view/1542.