M. B. C. Simelane, O. A. Lawal, T. G. Djarova, C. T. Musabayane, M. Singh, and A. R. Opoku, “LACTOGENIC ACTIVITY OF RATS STIMULATED BY GUNNERA PERPENSA L. (GUNNERACEAE) FROM SOUTH AFRICA”, Afr J Tradit Complement Altern Med, vol. 9, no. 4, pp. 561–573, May 2012.