Text this: On belief functions and random sets

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