發送短信 : Major export destinations of Thailand: Evidence from copula-based simultaneous kink equation

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