<ref name="Hoffman_et_al_1990">{{cite journal |first1=D. R. |last1=Hoffman |first2=A. M. |last2=Smith |first3=M. |last3=Schmidt |first4=J. E. |last4=Moffitt |first5=M. |last5=Guralnick |year=1990 |title=Allergens in Hymenoptera venom. XXII. Comparison of venoms from two species of imported fire ants, ''Solenopsis'' ''invicta'' and ''richteri''. |url= |journal=Journal of Allergy and Clinical Immunology |publisher= |volume=85 |issue= |pages=988–996 |doi= }}</ref>