<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">van de Sompel, Herbert / Nelson, Michael L. </hi>(2015): "Reminiscing about 15 Years of Interoperability Efforts", in: <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">D-Lib Magazine</hi> 21 (11/12) <ref xmlns="http://www.tei-c.org/ns/1.0" target="http://www.dlib.org/dlib/november15/vandesompel/11vandesompel.html">http://www.dlib.org/dlib/november15/vandesompel/11vandesompel.html</ref> [letzter Zugriff: 25.09.2017].