@techreport {TR-1985-005,
   type = {Technical Report},
   author = {Stephen Fickas, David Novick},
   title = {Control Knowledge in Expert Systems:  Relaxing Restrictive Assumptions },
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = TR-1985-005,
   month = 2,
   year = 1985,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/TR-1985-005.pdf}},
}