Rickettsial infections of dogs, horses and ticks in Juiz de Fora, southeastern Brazil, and isolation of Rickettsia rickettsii from Rhipicephalus sanguineus ticks - Pacheco, Richard de Campos; Moraes Filho, Jonas; Guedes, Elizangela; Silveira, Iara; Richtzenhain, Leonardo José; Leite, Romário Cerqueira; Labruna, Marcelo Bahia (Medical and Veterinary Entomology, 2011)