(:
    Find the authors in the document.
    Over bibliography.xml on the class web portal!
    parke godfrey 2013-11-06

    Now this Xpath expression evaluates over the remote source!
:)

declare variable $biblio as xs:string :=
    "http://"
    || "www.eecs.yorku.ca"
    || "/course_archive/2020-21/W/4415/assignment/xquery/example/"
    || "bibliography.xml";

doc($biblio)//author