@article{lin312865,
    title   = {Difference in structure between type b and nontypable Haemophilus influenzae populations.},    
    author  = {Porras O, Caugant DA, Gray B, Lagergard T, Levin BR, Svanborg-Eden C.},    
    journal = {Infect Immun},    
    year    = {1986},    
    doi     = {10.1128/iai.53.1.79-89.1986},    
    pmid    = {3487508}        
    }
    @article{lin312864,
    title   = {Application of multilocus enzyme gel electrophoresis to Haemophilus influenzae.},    
    author  = {Porras O, Caugant DA, Lagergard T, Svanborg-Eden C.},    
    journal = {Infect Immun},    
    year    = {1986},    
    doi     = {10.1128/iai.53.1.71-78.1986},    
    pmid    = {3522433}        
    }