@PhdThesis{f-chsa-78,
    author = "Franklin, Wm Randolph",
    title = "Combinatorics of hidden surface algorithms",
    type = "Technical {Report}",
    number = "TR-12-78",
    school = "Center for Research in Computing Technology, Harvard Univ.",
    address = "Cambridge, MA",
    year = "1978",
    month = "June",
    oldlabel = "geom-221",
    href = "\bibhrefthesis{0-harvard78-thesis}",
    fulltext = "https://wrfranklin.org/p/0-harvard78-thesis.pdf",
    comments = "Thesis w/o appendices available as a TR from CRCT. Complete thesis available only on microfilm from Harvard, since Harvard did not then subscribe to UMI.",
    mykey = "vis3dobj",
    keywords = "computer graphics, hidden line/surface elimination"
}