@other{https://resolver.caltech.edu/CaltechAUTHORS:20170901-155513164,
    title = "Entry and R \& D Costs in Competitive Procurements and Contracting",
    year = "1989",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20170901-155513164",
    id = "record",
    doi = "10.7907/k3a4d-b3018"
}


@other{https://resolver.caltech.edu/CaltechAUTHORS:20170906-133509554,
    title = "Monopoly Provision of Product Warranties",
    year = "1989",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20170906-133509554",
    id = "record",
    doi = "10.7907/y7mrn-83m58"
}


@other{https://resolver.caltech.edu/CaltechAUTHORS:20170905-130852791,
    title = "Incentive Procurement Contracts with Costly R\&D",
    year = "1989",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20170905-130852791",
    id = "record",
    doi = "10.7907/f1z2g-0we39"
}