Le, Thi Thuy, and Thi Van Anh Dang. 2025. “Effects of Nitrogen Concentration on Growth and Quality of Hydroponically Grown Purple Kale (Brassica Oleracea Var. Sabellica)”. Hue University Journal of Science: Natural Science 134 (1S-2):5-16. https://doi.org/10.26459/hueunijns.v134i1S-2.7893.