The quest for machine translation quality at CLS Communication Hans-Udo Stadler author Ursula Peter-Spörndli author 2007-sep 10-14 text Proceedings of Machine Translation Summit XI: Papers Bente Maegaard editor Copenhagen, Denmark conference publication stadler-peter-sporndli-2007-quest https://aclanthology.org/2007.mtsummit-papers.58/ 2007-sep 10-14