@article {3975,
	title = {The Tangent Search Engine: Improved Similarity Metrics and Scalability For Math Formula Search},
	journal = {ArXiv},
	volume = {abs/1507.06235},
	year = {2015},
	url = {http://arxiv.org/abs/1507.06235},
	author = {Richard Zanibbi and Kenny Davila and Andrew Kane and Frank Tompa}
}
