@article{article990100b5,
title   = {Trypanocidal activity of quinonemethide triterpenoids from cheiloclinium cognatum (hippocrateaceae)},
author = {Lião, luciano M and Silva , Gilmar A. and Monteiro, Marcos Roberto and Albuquerque, Sérgio de},
year = {2008},
journal   = {Zeitschrift fuer Naturforschung. Section C}
}