@ARTICLE{predator2013,
     Title={Predator Prey Optimization method for the design of IIR filter},
     Author={Balraj Singh, J.S. Dhillon and Y.S. Brar},
     Journal={WSEAS Transactions On Signal Processing,},
     Volume={9},
     Number={2},
     Pages={51-62},
     Publisher={},
     Year={2013}
}