Charoenvisal, N., and J. Sasipreeyajan. “Efficacy of Live NDV Vaccine Simultaneously Vaccinated With Recombinant HVT-NDV Vaccine on Early Protection Against Newcastle Disease Virus Challenge”. The Thai Journal of Veterinary Medicine, vol. 49, no. 1, May 2019, pp. 9-14, https://he01.tci-thaijo.org/index.php/tjvm/article/view/195312.