C.Mani, and S.Kavitha. “Buffer Dimensioning of Dtn Replication-Based Routing Nodes With Hierarchical Routing Scheme”. International Journal of Intellectual Advancements and Research in Engineering Computations, vol. 5, no. 2, July 2017, pp. 1444-9, https://ijiarec.com/ijiarec/article/view/1512.