@inbook{https://resolver.caltech.edu/CaltechAUTHORS:20180828-122925125,
    chapter = "Cygnus X-1: shedding light on the spectral variability of a black hole",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20180828-122925125",
    id = "record",
    doi = "10.22323/1.176.0050"
}