PROHP, T.P.; EKPO, K.E.; OSAGIE, E.V.; OSAGIE, A.; OBI, H. Polyphenol Contents and Polyphenol Oxidase Activities of Some Nigerian Kolanuts. Pakistan Journal of Nutrition, Pakistan, v. 8, n. 7, p. 1030–1031, 2009. DOI: 10.3923/pjn.2009.1030.1031. Disponível em: https://pjnonline.org/pjn/article/view/940. Acesso em: 2 sep. 2025.