أرسل هذا في رسالة قصيرة: Approximations to the Distribution Functions of the Ordinary Least Squares and Two-Stage Least Squares Estimators in the Case of Two Included Endogenous Variables

  _____    __   __   _____       ___              
 |__  //   \ \\/ // |  __ \\    / _ \\    ____    
   / //     \ ` //  | |  \ ||  / //\ \\  |    \\  
  / //__     | ||   | |__/ || |  ___  || | [] ||  
 /_____||    |_||   |_____//  |_||  |_|| |  __//  
 `-----`     `-`'    -----`   `-`   `-`  |_|`-`   
                                         `-`