Digital Libraries: Research and Development First International DELOS Conference, Pisa, Italy, February 13-14, 2007, Revised Selected Papers Thanos Costantino Heftet / 2007 / Engelsk
Research and Advanced Technology for Digital Libraries International Conference on Theory and Practice of Digital Libraries, TPDL, Berlin, Germany, September 26-28, 2011, Proceedings Gradmann Stefan Heftet / 2011 / Engelsk
