@techreport {PHD-199905-Hundhausen,
   type = {Technical Report},
   author = {Christopher David Hundhausen},
   title = {Toward Effective Algorithm Visualization Artifacts: Designing for Participation and Communication in an Undergraduate Algorithms Course},
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = PHD-199905-Hundhausen,
   month = 5,
   year = 1999,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/PHD-199905-Hundhausen.pdf}},
}