Charoenvisal, N., B. Supannamoke, R. Koopman, and J. Sasipreeyajan. “Efficacy of Different Vaccination Programs of Recombinant HVT-NDV Vaccine Against Genotype VII NDV Challenge in Broiler Chickens”. The Thai Journal of Veterinary Medicine, vol. 48, no. 4, Mar. 2019, pp. 603-11, https://he01.tci-thaijo.org/index.php/tjvm/article/view/179827.