D. M.Prakash, S. Nithyanantham, V. Nishanth, A. Prakash, and D. Kaviyarrasu, “Smart city ambulance for tracking shortest path using global position system”, IJET, vol. 7, no. 1.3, pp. 187–190, Dec. 2017, doi: 10.14419/ijet.v7i1.3.10668.