Pulbutr, P. et al. 2021. Investigation of the Prebiotic Properties of the Yam Bean (Pachyrhizus erosus (L.) Urban) Tuber Extract: doi.org/10.26538/tjnpr/v5i7.15. Tropical Journal of Natural Product Research (TJNPR). 5, 7 (Jul. 2021), 1250–1254.