Radhika Baskar, Sudhakar Sengan, S.Sumithra, R.Purushothaman, T. Jayasankar, “An Improved Routing Schema with Special Clustering using Hybrid GA-ACO-PSO for Heterogeneous Wireless Sensor Network”, IJAST, vol. 29, no. 05, pp. 6661 - 6672, May 2020.