Jonathan Calder, Mike Reape, and Hank Zeevat,, An algorithm for generation in unification categorial grammar. In Proceedings of the 4th Conference of the European Chapter of the Association for Computational Linguistics, pages 233-240, Manchester, England (10–12 April), University of Manchester Institute of Science and Technology, 1989.
Vukmirović, Petar; Bentkamp, Alexander; Nummelin, Visa (2021년 12월 14일). 《Efficient Full Higher-Order Unification》. 《Logical Methods in Computer Science》17. 6919쪽. arXiv:2011.09507. doi:10.46298/lmcs-17(4:18)2021.
Claus-Peter Wirth; Jörg Siekmann; Christoph Benzmüller; Serge Autexier (2009). Lectures on Jacques Herbrand as a Logician (SEKI Report). DFKI. arXiv:0902.4682. Here: p.56
Vukmirović, Petar; Bentkamp, Alexander; Nummelin, Visa (2021년 12월 14일). 《Efficient Full Higher-Order Unification》. 《Logical Methods in Computer Science》17. 6919쪽. arXiv:2011.09507. doi:10.46298/lmcs-17(4:18)2021.
Fages, François; Huet, Gérard (1986). 《Complete Sets of Unifiers and Matchers in Equational Theories》. 《Theoretical Computer Science》43. 189–200쪽. doi:10.1016/0304-3975(86)90175-1.
Robinson, J.A. (Jan 1965). 《A Machine-Oriented Logic Based on the Resolution Principle》. 《Journal of the ACM》12. 23–41쪽. doi:10.1145/321250.321253. S2CID14389185.; Here: sect.5.8, p.32
A. Boudet; J.P. Jouannaud; M. Schmidt-Schauß (1989). 《Unification of Boolean Rings and Abelian Groups》. 《Journal of Symbolic Computation》8. 449–477쪽. doi:10.1016/s0747-7171(89)80054-9.
Gérard P. Huet (1973). 《The Undecidability of Unification in Third Order Logic》. 《Information and Control》22. 257–267쪽. doi:10.1016/S0019-9958(73)90301-X.
Robinson, J.A. (Jan 1965). 《A Machine-Oriented Logic Based on the Resolution Principle》. 《Journal of the ACM》12. 23–41쪽. doi:10.1145/321250.321253. S2CID14389185.; Here: sect.5.8, p.32