Wiky Krisdianto, Miftachul Jannah Firdaus, Dwi Ajiatmo, Hidayatul Nurohmah, and Machrus Ali, “Optimasi PID Controller pada Wind-Turbine Berbasis Ant Colony Optimization dan Firefly Algorithm”, SinarFe7, vol. 1, no. 1, pp. 128–133, Jul. 2018.