發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Firm efficiency in Thailand’s telecommunication industry: Application of the stochastic frontier model with dependence in time and error components