From the UNL Hypergraph to GETA’s Multilevel Tree Etienne Blanc author 2000-nov 20-22 text Proceedings of the International Conference on Machine Translation and Multilingual Applications in the new Millennium: MT 2000 University of Exeter, UK conference publication blanc-2000-unl https://aclanthology.org/2000.bcs-1.14/ 2000-nov 20-22