Kim B-C, Qian X, Leang C, Coppi MV, Lovley DR.  2006.  Two putative c-type multiheme cytochromes required for the expression of OmcB, an outer membrane protein essential for optimal Fe(III) reduction in Geobacter sulfurreducens.. J Bacteriol. 188(8):3138-42.

Kim B-C, Leang C, Ding Y-HR, Glaven RH, Coppi MV, Lovley DR.  2005.  OmcF, a putative c-Type monoheme outer membrane cytochrome required for the expression of other outer membrane cytochromes in Geobacter sulfurreducens.. J Bacteriol. 187(13):4505-13.