أرسل هذا في رسالة قصيرة: Mobile App portfolio management and developers' performance: An empirical study of the Apple IOS platform

  _  __     ___     ______    _    _     _  _   
 | |/ //   / _ \\  |      \\ | || | ||  | \| || 
 | ' //   | / \ || |  --  // | || | ||  |  ' || 
 | . \\   | \_/ || |  --  \\ | \\_/ ||  | .  || 
 |_|\_\\   \___//  |______//  \____//   |_|\_|| 
 `-` --`   `---`   `------`    `---`    `-` -`