LX-Center: a center of online linguistic services António Branco author Francisco Costa author Eduardo Ferreira author Pedro Martins author Filipe Nunes author João Silva author Sara Silveira author 2009-08 text Proceedings of the ACL-IJCNLP 2009 Software Demonstrations Gary Geunbae Lee editor Sabine Schulte im Walde editor Association for Computational Linguistics Suntec, Singapore conference publication branco-etal-2009-lx https://aclanthology.org/P09-4002/ 2009-08 5 8