@phdthesis {PHD-199006-Downing,
   type = {Dissertation Defense},
   author = {Keith Downing},
   title = {The Use of Teleology in the Qualitative Evaluation and Explanation of Circulatory System},
   school = {College of Arts and Sciences, University of Oregon},
   month = 6,
   year = 1990,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/PHD-199006-Downing.pdf}},
}