doi> RIBEIRO, V. L. S. ; SANTOS, J. C. ; Martins, J.R. ; SCHRIPSEMA, J. ; SIQUEIRA, I. R. ; POSERB, G. L. V. ; APEL, M. A. . Acaricidal properties of the essential oil and precocene II obtained from Calea serrata (Asteraceae) on the cattle tick Rhipicephalus (Boophilus) microplus (Acari: Ixodidae. Veterinary Parasitology (Print), v. 179, p. 195-198, 2011.