@article{Hughes:2005:PNU:1094622.1094629,
 author = {Hughes, Dominic J. D. and Glabbeek, Rob J.~van},
 title = {Proof nets for unit-free multiplicative-additive linear logic},
 journal = {ACM Trans. Comput. Logic},
 issue_date = {October 2005},
 volume = {6},
 number = {4},
 month = oct,
 year = {2005},
 issn = {1529-3785},
 pages = {784--842},
 numpages = {59},
 url = {http://doi.acm.org/10.1145/1094622.1094629},
 doi = {10.1145/1094622.1094629},
 acmid = {1094629},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {Linear logic, additives, cut elimination, proof nets},
 note = {Invited submission November 2003, revised January 2005.
         Full version of the LICS'03 paper \cite{HG03}.
         Available at http://boole.stanford.edu/\,\~{ }dominic/papers}
}