أرسل هذا في رسالة قصيرة: A STUDY OF PROTON-INDUCED L-SHELL CROSS SECTIONS

 _    _     ______   _    _     _____    _    _   
| |  | ||  /_   _// | || | ||  |  ___|| | |  | || 
| |/\| ||   -| ||-  | || | ||  | ||__   | |/\| || 
|  /\  ||   _| ||_  | \\_/ ||  | ||__   |  /\  || 
|_// \_||  /_____//  \____//   |_____|| |_// \_|| 
`-`   `-`  `-----`    `---`    `-----`  `-`   `-`