Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
The disease most stressed in this review will be feline pneumonitis. It was decided to concentrate on this disease because it represents a fairly well defined disease entity. For this reason, it can be more adequately described and discussed than the more recently discovered feline pneumonitis. Feline pneumonitis will be the first disease described and the other feline respiratory viruses will then be described and compared to it.
Jensen, Richard D.
"A Review of the Feline Respiratory Viruses,"
Iowa State University Veterinarian: Vol. 26
, Article 6.
Available at: https://lib.dr.iastate.edu/iowastate_veterinarian/vol26/iss2/6