@TechReport{kensler:08:noise,
    title       = { {B}etter {G}radient {N}oise },
    author      = { Andrew Kensler and Aaron Knoll and Peter Shirley },
    year        = { 2008 },
    institution = { SCI Institute, University of Utah },
    number      = { UUSCI-2008-001 }
}