1. Hoogstraal H: The epidemiology of tick-borne Crimean-Congo hemorrhagic fever in Asia, Europe, and Africa. J Med Entomol 15:307–417, 1979
2. Smith T, Kilborne FL: Investigations into the nature, causation, and prevention of Texas, or southern cattle fever. USDA Bureau Anim Ind Bull 1:1–301, 1893
3. Marchoux E, Salimbeni A: La spirillose des poules. Ann Inst Pasteur Paris 17:569–580, 1903
4. Ross PH, Milne AO: Tick fever. BMJ 2: 1453–1454, 1904
5. Arthur DR: Ticks and Disease. Row, Peterson, Evanston, IL, 1961