Building a learner corpus for Russian Ekaterina Rakhilina author Anastasia Vyrenkova author Elmira Mustakimova author Alina Ladygina author Ivan Smirnov author 2016-11 text Proceedings of the joint workshop on NLP for Computer Assisted Language Learning and NLP for Language Acquisition Elena Volodina editor Gintarė Grigonytė editor Ildikó Pilán editor Kristina Nilsson Björkenstam editor Lars Borin editor LiU Electronic Press Umeå, Sweden conference publication rakhilina-etal-2016-building https://aclanthology.org/W16-6509/ 2016-11 66 75