@article{https://resolver.caltech.edu/CaltechAUTHORS:20170408-143320653,
    title = "Formulas for the derivative and critical points of topological entropy for Anosov and geodesic flows",
    journal = "Communications in Mathematical Physics",
    year = "1991",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20170408-143320653",
    id = "record",
    issn = "0010-3616",
    doi = "10.1007/BF02099667",
    volume = "138"
}


@article{https://resolver.caltech.edu/CaltechAUTHORS:20170408-163655442,
    title = "Anosov flows with smooth foliations and rigidity of geodesic flows on three-dimensional manifolds of negative curvature",
    journal = "Ergodic Theory And Dynamical Systems",
    year = "1990",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20170408-163655442",
    id = "record",
    issn = "1469-4417",
    doi = "10.1017/S0143385700005836",
    volume = "10"
}