@book{https://resolver.caltech.edu/CaltechAUTHORS:20150227-074456762,
    title = "Linear estimation",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20150227-074456762",
    id = "record",
    isbn = "0130224642"
}


@book{https://resolver.caltech.edu/CaltechAUTHORS:20150223-071907105,
    title = "Indefinite-quadratic estimation and control: a unified approach to H^2 and H∞ theories",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20150223-071907105",
    id = "record",
    isbn = "9780898714111",
    doi = "10.1137/1.9781611970760"
}