@mastersthesis {MS-199906-Walker,
   type = {Masters Thesis},
   author = {Peter Andrew Walker},
   title = {A Visualization System for Bidirectional Reflectance Distribution Functions},
   school = {College of Arts and Sciences, University of Oregon},
   month = 6,
   year = 1999,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/MS-199906-Walker.pdf}},
}