Haxen, U. (1999). The Bibliotheca Simonseniana and the David Simonsen Archives (The Royal Library, Copenhagen). Preserving Jewish Archives as part of the European Cultural Heritage : Proceedings of the Conference on Judaica Archives in Europe, for Archivists and Librarians ; Potsdam, 1999, 11-13 July.

Haxen, Ulf. "The Bibliotheca Simonseniana and the David Simonsen Archives (The Royal Library, Copenhagen)." Preserving Jewish Archives as Part of the European Cultural Heritage : Proceedings of the Conference on Judaica Archives in Europe, for Archivists and Librarians ; Potsdam, 1999, 11-13 July 1999.

Haxen, Ulf. "The Bibliotheca Simonseniana and the David Simonsen Archives (The Royal Library, Copenhagen)." Preserving Jewish Archives as Part of the European Cultural Heritage : Proceedings of the Conference on Judaica Archives in Europe, for Archivists and Librarians ; Potsdam, 1999, 11-13 July, 1999.