@phdthesis {PHD-201112-Yao,
   type = {Dissertation Defense},
   author = {Xiangkui Yao},
   title = {A Personalized Virtual Environment as a Testbed for Assistive Technologies},
   school = {College of Arts and Sciences, University of Oregon},
   month = 12,
   year = 2011,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/PHD-201112-Yao.pdf}},
}