Squibs: Going to the Roots of Dependency Parsing Miguel Ballesteros author Joakim Nivre author 2013-03 text journal article Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal ballesteros-nivre-2013-squibs 10.1162/COLI_a_00132 https://aclanthology.org/J13-1002/ 2013-03 39 1 5 13