@other{https://resolver.caltech.edu/CaltechEQL:EQL-R-21,
    title = "Deep ocean disposal of sewage sludge off Orange County, California: a research plan",
    year = "2009",
    url = "https://resolver.caltech.edu/CaltechEQL:EQL-R-21",
    id = "record",
    doi = "10.7907/Z9HD7SKS"
}


@other{https://resolver.caltech.edu/CaltechEQL:EQL-R-13,
    title = "Digested sewage sludge: characterization of a residual and modeling for its disposal in the ocean off Southern California",
    year = "2009",
    url = "https://resolver.caltech.edu/CaltechEQL:EQL-R-13",
    id = "record",
    doi = "10.7907/Z94B2Z7C"
}