@techreport {TR-1995-016,
   type = {Technical Report},
   author = {Zena Ariola, Jan Willem Klop},
   title = {Equational Term Graph Rewriting},
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = TR-1995-016,
   month = 9,
   year = 1995,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/TR-1995-016.pdf}},
}