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

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發送短信 : PORTFOLIO SELECTION WITH TRANSACTION COSTS IN A REGIME SWITCHING MODEL