K. A. M. Annuar, I. Irianto, M. H. Harun, M. F. M. A. Halim, I. M. Saadon, and N. A. Rahman, “Particle Swarm Optimization (PSO) for Simulating Robot Movement on Two-Dimensional Space Based on Odor Sensing”, JTEC, vol. 9, no. 2-6, pp. 79–83, Jun. 2017.