Yanto, Musli, Liga Mayola, and M. Hafizh. “Neural Network Backpropagation Identification of Jakarta Islamic Index (JII) Stock Price Patterns”. Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) 4, no. 1 (February 8, 2020): 90 - 94. Accessed October 22, 2020. http://jurnal.iaii.or.id/index.php/RESTI/article/view/1266.