@techreport {TR-1990-012,
   type = {Technical Report},
   author = {Sarah Douglas, Eckehard Doerry, David Novick},
   title = {Splitting the Difference:  Exploring the Middle Ground in User Interface Design },
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = TR-1990-012,
   month = 6,
   year = 1990,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/TR-1990-012.pdf}},
}