@article{Kirma2004,
author = {Kirma N, Ferreira JL, Baumstark BR.},
title = {Characterization of six type A strains of Clostridium botulinum that contain type B toxin gene sequences.},
journal = {FEMS Microbiol Lett.},
year = {2004},
doi = {10.1016/S0378-1097(03)00911-X},
pmid = {14987759}
}