@inproceedings{toutanova2004kernels,
 author = {Kristina Toutanova and Penka Markova and Christopher Manning},
 booktitle = {EMNLP},
 title = {The Leaf Projection Path View of Parse Trees: Exploring String Kernels for HPSG Parse Selection},
 url = {https://nlp.stanford.edu/pubs/toutanova2004kernels.pdf},
 year = {2004}
}