Chemical constituents with free-radical-scavenging activity from the leaves of Lantana montevidensis (Spreng.) Briq., Makboul, Makboul A., Attia Ahmed A., Farag Salwa F., Mohamed Nesma M., and Ross Samir A. , Pharmacognosy Journal, 3rd Sept, 2014, Volume 6, Issue 6, p.27-31, (2014)