Citations in the Digital Library of Classics: Extracting Canonical References by Using Conditional Random Fields Matteo Romanello author Federico Boschetti author Gregory Crane author 2009-08 text Proceedings of the 2009 Workshop on Text and Citation Analysis for Scholarly Digital Libraries (NLPIR4DL) Min-Yen Kan editor Simone Teufel editor Association for Computational Linguistics Suntec City, Singapore conference publication romanello-etal-2009-citations https://aclanthology.org/W09-3610/ 2009-08 80 87