Low antiplasmodial activity of alkaloids and amides from the stem bark of Zanthoxylum rubescens (Rutaceae)L. Penali, D.A. Mulholland, K.D. Tano, P.K. Cheplogoi and M. RandrianarivelojosiaParasite, 14 2 (2007) 161-164DOI: https://doi.org/10.1051/parasite/2007142161