@techreport {TR-1990-017,
   type = {Technical Report},
   author = {William Clinger, Jonathan Rees},
   title = {Macros That Work},
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = TR-1990-017,
   year = 1990,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/TR-1990-017.pdf}},
}