@other{https://resolver.caltech.edu/CaltechAUTHORS:20200106-074015450,
    title = "Cosmic Explorer: The U.S. Contribution to Gravitational-Wave Astronomy beyond LIGO",
    year = "2019",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20200106-074015450",
    id = "record",
    doi = "10.48550/arXiv.1907.04833"
}


@other{https://resolver.caltech.edu/CaltechAUTHORS:20191217-095908525,
    title = "The US Program in Ground-Based Gravitational Wave Science: Contribution from the LIGO Laboratory",
    year = "2019",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20191217-095908525",
    id = "record",
    doi = "10.48550/arXiv.1903.04615"
}