Hoffman SL (1980). “Plague in the United States: the "Black Death" is still alive”. Annals of Emergency Medicine9 (6): 319–322. doi:10.1016/S0196-0644(80)80068-0. PMID7386958.
Mwengee W; Butler, Thomas; Mgema, Samuel; Mhina, George; Almasi, Yusuf; Bradley, Charles; Formanik, James B.; Rochester, C. George (2006). “Treatment of Plague with Genamicin or Doxycycline in a Randomized Clinical Trial in Tanzania”. Clin Infect Dis42 (5): 614–621. doi:10.1086/500137. PMID16447105.
Hoffman SL (1980). “Plague in the United States: the "Black Death" is still alive”. Annals of Emergency Medicine9 (6): 319–322. doi:10.1016/S0196-0644(80)80068-0. PMID7386958.
Mwengee W; Butler, Thomas; Mgema, Samuel; Mhina, George; Almasi, Yusuf; Bradley, Charles; Formanik, James B.; Rochester, C. George (2006). “Treatment of Plague with Genamicin or Doxycycline in a Randomized Clinical Trial in Tanzania”. Clin Infect Dis42 (5): 614–621. doi:10.1086/500137. PMID16447105.