أرسل هذا في رسالة قصيرة: Global electricity trade network: Structures and implications

 _    _      ___     _    _      ___     _    _   
| || | ||   / _ \\  | \  / ||   / _ \\  | |  | || 
| || | ||  | / \ || |  \/  ||  | / \ || | |/\| || 
| \\_/ ||  | \_/ || | .  . ||  | \_/ || |  /\  || 
 \____//    \___//  |_|\/|_||   \___//  |_// \_|| 
  `---`     `---`   `-`  `-`    `---`   `-`   `-`