أرسل هذا في رسالة قصيرة: Tail dependence between gold and sectorial stocks in China: Insights for portfolio diversification

 _    _     ______   _    _    _    _    _    _   
| \  / ||  /_   _// | || | || | || | || | \  / || 
|  \/  ||   -| ||-  | || | || | || | || |  \/  || 
| .  . ||   _| ||_  | \\_/ || | \\_/ || | .  . || 
|_|\/|_||  /_____//  \____//   \____//  |_|\/|_|| 
`-`  `-`   `-----`    `---`     `---`   `-`  `-`