Hoang, T. T. H., Tran, T. T., Pham Khanh Tu, CHIANG, C., & Dufey, J. (2007). Impact of cropping systems on physico-chemical properties of coastal sandy soils in Thua Thien Hue-Province. (in vietnamese). Vietnam Journal of Soil Science, 28, 40-44. https://hdl.handle.net/2078.5/150480 (Original work published 2007)