@inproceedings{toutanova2002feature,
 author = {Kristina Toutanova and Christopher D. Manning},
 booktitle = {Sixth Conference on Natural Language Learning (CoNLL-2002)},
 title = {Feature Selection for a Rich HPSG Grammar Using Decision Trees},
 url = {https://nlp.stanford.edu/pubs/toutanova2002feature.pdf},
 year = {2002}
}