ROI Analysis Model for Language Service Providers Ekaterina Stambolieva author 2013-sep 2-6 text Proceedings of Machine Translation Summit XIV: User track Andy Way editor Daniel Grasmick editor Heidi Depaetere editor Nice, France conference publication stambolieva-2013-roi https://aclanthology.org/2013.mtsummit-user.6/ 2013-sep 2-6