أرسل هذا في رسالة قصيرة: A copula-GARCH approach for analyzing dynamic conditional dependency structure between liquefied petroleum gas freight rate, product price arbitrage and crude oil price

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