Hacker, J; Bender, L; Ott, M; Wingender, J; Lund, B; et al. (1990). "Deletions of chro- mosomal regions coding for fimbriae and hemolysins occur in vivo and in vitro in various extraintestinal Escherichia coli iso- lates". Microb. Pathog8 (3): 213–25. PMID1974320. doi:10.1016/0882-4010(90)90048-U.
Hacker, J; Bender, L; Ott, M; Wingender, J; Lund, B; et al. (1990). "Deletions of chro- mosomal regions coding for fimbriae and hemolysins occur in vivo and in vitro in various extraintestinal Escherichia coli iso- lates". Microb. Pathog8 (3): 213–25. PMID1974320. doi:10.1016/0882-4010(90)90048-U.