Koebnik R (August 2005). "TonB-dependent trans-envelope signalling: the exception or the rule?". Trends Microbiol. 13 (8): 343–347. doi:10.1016/j.tim.2005.06.005. PMID15993072.
Koebnik R (August 2005). "TonB-dependent trans-envelope signalling: the exception or the rule?". Trends Microbiol. 13 (8): 343–347. doi:10.1016/j.tim.2005.06.005. PMID15993072.