Isolation from man of "avian infectious bronchitis virus-like" viruses (coronaviruses) similar to 229E virus, with some epidemiological observations.
J Infect Dis
http://www.ncbi.nlm.nih.gov/pubmed/4976345
Seroepidemiologic studies of coronavirus infection in adults and children.
Am J Epidemiol
http://www.ncbi.nlm.nih.gov/pubmed/4315625
Growth in suckling-mouse brain of "IBV-like" viruses from patients with upper respiratory tract disease.
Proc Natl Acad Sci U S A
http://www.ncbi.nlm.nih.gov/pubmed/4298953