@techreport {TR-1988-003,
   type = {Technical Report},
   author = {Arthur Farley, Kuan-Pin Lin},
   title = {Qualitative Reasoning in Economics},
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = TR-1988-003,
   month = 3,
   year = 1988,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/TR-1988-003.pdf}},
}