Guang Sun Jingjing Lin Chen Yang Xiangyang Yin Ziyu Li Peng Guo Junqi Sun Xiaoping Fan Bin Pan Stock Price Forecasting: An Echo State Network Approach. 509-520 2021 36 Comput. Syst. Sci. Eng. 3 https://doi.org/10.32604/csse.2021.014189 db/journals/csse/csse36.html#SunLYYLGSFP21