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

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Text this: Fifty Years of Fuzzy Sets: Contributions to Fuzzy Theory (Preface to the Special Issue)