@techreport {DRP-201410-Johnson,
   type = {Directed Research Project},
   author = {Philip Johnson-Freyd},
   title = {Second-Order Classical Sequent Calculus},
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = DRP-201410-Johnson,
   month = 10,
   year = 2014,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/DRP-201410-Johnson.pdf}},
}