the networked system of touchscreen vending machines lets users purchase beverage gifts for friends and strangers-- complete with a personalized video message-- that can be redeemed at any other 'social vending' machine.
M. Anselmo, D. Giammarresi, and M. Madonia. Theoretical Computer Science, 410 (37):
3520 - 3529(2009)Implementation and Application of Automata (CIAA 2007).
E. Ponvert, J. Baldridge, and K. Erk. Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies - Volume 1, page 1077--1086. Stroudsburg, PA, USA, Association for Computational Linguistics, (2011)
J. Eisner, and G. Satta. Proceedings of the 37th annual meeting of the Association for Computational Linguistics on Computational Linguistics, page 457--464. Stroudsburg, PA, USA, Association for Computational Linguistics, (1999)
P. Talukdar, T. Brants, M. Liberman, and F. Pereira. Proceedings of the Tenth Conference on Computational Natural Language Learning (CoNLL-X), page 141--148. New York City, Association for Computational Linguistics, (June 2006)