Alvarez, R., Lwamba, H. M., Kapczynski, D. R., Njenga, M. K., & Seal, B. S. (2003). Nucleotide and Predicted Amino Acid Sequence-Based Analysis of the Avian Metapneumovirus Type C Cell Attachment Glycoprotein Gene: Phylogenetic Analysis and Molecular Epidemiology of U.S. Pneumoviruses. American Society for Microbiology.

Alvarez, Rene, Humphrey M. Lwamba, Darrell R. Kapczynski, M. Kariuki Njenga, and Bruce S. Seal. Nucleotide and Predicted Amino Acid Sequence-Based Analysis of the Avian Metapneumovirus Type C Cell Attachment Glycoprotein Gene: Phylogenetic Analysis and Molecular Epidemiology of U.S. Pneumoviruses. American Society for Microbiology, 2003.

Alvarez, Rene, et al. Nucleotide and Predicted Amino Acid Sequence-Based Analysis of the Avian Metapneumovirus Type C Cell Attachment Glycoprotein Gene: Phylogenetic Analysis and Molecular Epidemiology of U.S. Pneumoviruses. American Society for Microbiology, 2003.