Mandal, S. , Kar, R. , Mandal, D. , Ghoshal, S.. "Swarm Intelligence based Optimal Linear Phase FIR High Pass Filter Design using Particle Swarm Optimization with Constriction Factor and Inertia Weight Approach". World Academy of Science, Engineering and Technology, Open Science Index 56, International Journal of Electronics and Communication Engineering, (2011), 5(8), 1116 - 1121.