Sunarsih, E. S., Hakim, L., Sugiyanto, S. and Sumantri, S. (2012) “Protective effect of Brassica oleracea var. botrytis L. against theophylline-induced hepatocellular abnormalities in rats”, Universa Medicina, 31(1), pp. 12–19. doi: 10.18051/UnivMed.2012.v31.12-19.