發送短信 : Unit Root and Cointegrating Limit Theory When Initialization is in the Infinite Past

             ___     __   _      ___      ______  
    ___     / _ \\  | || | ||   / _ \\   /_   _// 
   /   ||  | / \ || | '--' ||  / //\ \\  `-| |,-  
  | [] ||  | \_/ || | .--. || |  ___  ||   | ||   
   \__ ||   \___//  |_|| |_|| |_||  |_||   |_||   
    -|_||   `---`   `-`  `-`  `-`   `-`    `-`'   
     `-`