@article{https://resolver.caltech.edu/CaltechAUTHORS:20170712-111147439,
    title = "Persistent Topology of Syntax",
    journal = "Mathematics in Computer Science",
    year = "2018",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20170712-111147439",
    id = "record",
    issn = "1661-8270",
    doi = "10.1007/s11786-017-0329-x",
    volume = "12"
}