@mastersthesis {MS-199706-Li,
   type = {Masters Thesis},
   author = {Bei Li},
   title = {An Analysis and Comparison of Two Visual Discrimination Models},
   school = {College of Arts and Sciences, University of Oregon},
   month = 6,
   year = 1997,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/MS-199706-Li.pdf}},
}