@techreport {TR-1987-009,
   type = {Technical Report},
   author = {John S. Conery },
   title = {Object Oriented Programming with First Order Logic },
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = TR-1987-009,
   month = 8,
   year = 1987,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/TR-1987-009.pdf}},
}