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 ______      ___      ______   __   __   _    _   
|      \\   / _ \\   /_   _//  \ \\/ // | |  | || 
|  --  //  | / \ ||  `-| |,-    \ ` //  | |/\| || 
|  --  \\  | \_/ ||    | ||      | ||   |  /\  || 
|______//   \___//     |_||      |_||   |_// \_|| 
`------`    `---`      `-`'      `-`'   `-`   `-`

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Text this: The intangible costs of haze in Singapore and Malaysia : a willingness to pay model