@article{lin311304,
    title   = {Bordetella parapertussis and Bordetella bronchiseptica contain transcriptionally silent pertussis toxin genes.},    
    author  = {Arico B, Rappuoli R.},    
    journal = {J Bacteriol},    
    year    = {1987},    
    doi     = {10.1128/jb.169.6.2847-2853.1987},    
    pmid    = {3584073}        
    }