ĐẶNG, T. H.; NGUYỄN, T. T. A.; HOÀNG, T. M. T.; VŨ, T. H. N.; HÀ, H. A. V.; HUỲNH, V. C. Optimisation of polyphenol extraction from An xoa stems (Helicteres Hirsuta Lour.). Hue University Journal of Science: Natural Science, [S. l.], v. 135, n. 1C, p. 91-101, 2026. DOI: 10.26459/hueunijns.v135i1C.8457. Disponível em: http://222.255.146.83/index.php/hujos-ns/article/view/8457. Acesso em: 29 oct. 2026.