أرسل هذا في رسالة قصيرة: Testing Additive Separability of Error Term in Nonparametric Structural Models

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