Basic References Winkler-Ellipsis-ELL2006.pdf Kruijff-Dependency-Grammar-ELL2006.pdf Hajic-Treebanks-and-Tagsets-ELL2006.pdf Hajicova-Prague-School-ELL2006.pdf Hajic_et_al-Annotations_at_analytical_level-TR1999.pdf Cunningham_and_Bontcheva-Computational-Language.pdf Bohmova_et_al.pdf