Antiplasmodial Quinones from Pentas longiflora and Pentas lanceolata - Endale, Milkyas; Alao, John Patrick; Akala, Hoseah M.; Rono, Nelson K.; Eyase, Fredrick L.; Derese, Solomon; Ndakala, Albert; Mbugua, Martin; Walsh, Douglas S.; Sunnerhagen, Per; Erdelyi, Mate; Yenesew, Abiy (Planta Medica, 2012)