@unpublished{cogprints2486,
           month = {November},
           title = {Luminous Intensity for Traffic Signals: A Scientific Basis for Performance Specifications},
          author = {John D. Bullough and Peter R. Boyce and Andrew Bierman and Kathryn M. Conway and Michelle Kun Huang and Conan P. O'Rourke and Claudia M. Hunter and Akiko Nakata},
            year = {1999},
        keywords = {color vision, light-emitting diodes, traffic signals},
             url = {http://cogprints.org/2486/},
        abstract = {Humnan factors experiments on visual responses to simulated traffic signals using incandescent lamps and light-emitting diodes are described.}
}

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