Penzes, Z., Tibbles, K., Shaw, K., Britton, P., Brown, T., & Cavanagh, D. (1994). Characterization of a Replicating and Packaged Defective RNA of Avian Coronavirus Infectious Bronchitis Virus. Virology.

Penzes, Z., K. Tibbles, K. Shaw, P. Britton, T.D.K Brown, و D. Cavanagh. "Characterization of a Replicating and Packaged Defective RNA of Avian Coronavirus Infectious Bronchitis Virus." Virology 1994.

Penzes, Z., et al. "Characterization of a Replicating and Packaged Defective RNA of Avian Coronavirus Infectious Bronchitis Virus." Virology 1994.