@book{kopka95,
    author    = "Helmut Kopka and Patrick W. Daly",
    title     = "A Guide to \LaTeX2e: document preparation for 
                 beginners and advanced users",
    publisher = "Addison-Wesley",
    year      = 1995
}

@book{goossens94,
    author    = "Michel Goossens and Frank Mittelbach and Alexander Samarin",
    title     = "The \LaTeX\ Companion",
    publisher = "Addison-Wesley",
    year      = 1994
}

@book{goossens97,
    author    = "Michel Goossens and Sebastian Rahtz and Frank Mittelbach",
    title     = "The \LaTeX\ Graphics Companion",
    publisher = "Addison-Wesley",
    year      = 1997
}

@book{goossens99,
    author    = "Michel Goossens and Sebastian Rahtz",
    title     = "The \LaTeX\ Web Companion",
    publisher = "Addison-Wesley",
    year      = 1999
}