Semi-automatic Acquisition of Lexical Resources and Grammars for Event Extraction in Bulgarian and Czech Hristo Tanev author Josef Steinberger author 2013-08 text Proceedings of the 4th Biennial International Workshop on Balto-Slavic Natural Language Processing Jakub Piskorski editor Lidia Pivovarova editor Hristo Tanev editor Roman Yangarber editor Association for Computational Linguistics Sofia, Bulgaria conference publication tanev-steinberger-2013-semi https://aclanthology.org/W13-2416/ 2013-08 110 118