@article{BlumOttCrossetal.1991,
  author    = {G. Blum and M. Ott and A. Cross and J{\"o}rg Hacker},
  title     = {Virulence determinants of Escherichia coli O6 extraintestinal isolates analysed by Southern hybridizations and DNA long range mapping techniques},
  year      = {1991},
}