<ref name="Degnan_et_al_2004">{{cite journal |first1=P. H. |last1=Degnan |first2=A. B. |last2=Lazarus |first3=C. D. |last3=Brock |first4=J. J. |last4=Wernegreen |year=2004 |title=Host-symbiont stability and fast evolutionary rates in an ant-bacterium association: cospeciation of ''Camponotus'' species and their endosymbionts, ''Candidatus'' Blochmannia |url=https://antcat.org/documents/4314/Degnan_et_al_2004_Syst_Biol.pdf |journal=Systematic Biology |publisher= |volume=53 |issue= |pages=95–110 |doi= }}</ref>