Babapoor, S., Almeida, D. de O., Fabis, J. J., Helal, Z. H., Wang, X., Girshick, T., & Khan, M. I. (2009). Protective Effect of In ovo Vaccination with IBV-Spike-Recombinant DNA and Chicken Interferon as an Adjuvant. International Journal of Poultry Science, 8(11), 1034–1041. https://doi.org/10.3923/ijps.2009.1034.1041