Đức, N. V., Nhung, T. T. P., Thắng, T. V., Thông, C. V. T., Toản, H. K. and Hải, T. T. H. (2019) “Growth, development and yield of several sweetgrass (Stevia rebaudiana bertoni) varieties in winter crop 2018 in Thua Thien Hue ”, Hue University Journal of Science: Natural Science, 128(1E), pp. 133-141. doi: 10.26459/hueuni-jns.v128i1E.5420.