Begum, Mst Deloara, et al. “Identification of Avian Leukosis Virus from Layer Chicken by Serological Test and Embryo Inoculation Technique”. Asian-Australasian Journal of Bioscience and Biotechnology, vol. 1, no. 1, Apr. 2016, pp. 23-30, doi:10.3329/aajbb.v1i1.61526.