أرسل هذا في رسالة قصيرة: Testing the validity of economic growth theories using copula-based seemingly unrelated quantile kink regression

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