C. I. C. Ogbonna and A. I. Ogbonna, “Combined Anti-diabetic Effects of Extracts of Artemisia annua var. chiknensis (CBGE/CHNA/09/LTNGS/G) and Each of Three Other Plants (Momordica charantia Linn. Vernonia amygdalina Del. and Aegle marmelos Correa) Traditionally Used in Nigeria for the Treatment of Diabetes”, aast-v6, pp. 136-149, Sep. 2019.