Chikwue , Maxwell, et al. “Agronomical Stabilization of Umuda-Isingwu Erosion Site Using Vetiver Grass”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 72, no. 1, Sept. 2020, pp. 181-96, https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/6206.