@Inproceedings{EPTCS183.2, author = "Antoy, Sergio and Johannsen, Jacob and Libby, Steven", year = "2015", title = "Needed Computations Shortcutting Needed Steps", editor = "Middeldorp, Aart and Raamsdonk, Femke van", booktitle = "{\rm Proceedings 8th International Workshop on} Computing with Terms and Graphs, {\rm Vienna, Austria, July 13, 2014}", series = "Electronic Proceedings in Theoretical Computer Science", volume = "183", publisher = "Open Publishing Association", pages = "18-32", doi = "10.4204/EPTCS.183.2", }