S. Suwanto, M. H. Bisri, D. C. R. Novitasari, and A. H. Asyhar, “Classification of EEG Signals using Fast Fourier Transform (FFT) and Adaptive Neuro Fuzzy Inference System (ANFIS)”, J. Mat. Mantik, vol. 5, no. 1, pp. 35–44, May 2019.