R. N. Alolga, A. G. Assanhou, and V. Onoja, “QUANTIFICATION OF XYLOPIC ACID AND CHROMATOGRAPHIC FINGERPRINT EVALUATIONS OF THE DRIED FRUITS OF XYLOPIA AETHIOPICA FROM FOUR AFRICAN COUNTRIES”, Afr J Tradit Complement Altern Med, vol. 15, no. 3, pp. 18–26, May 2018.