Markus Dreyer Jason Smith Jason Eisner Latent-Variable Modeling of String Transductions with Finite-State Methods. 1080-1089 2008 EMNLP http://www.aclweb.org/anthology/D08-1113 conf/emnlp/2008 db/conf/emnlp/emnlp2008.html#DreyerSE08