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New Austrian Tunneling Method (NATM) - Stability Analyses and Design
Walter Wittke, Berndt Pierau, Claus Erichsen
published for downloading in December 2006.
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Stability Analysis and Design for Mechanized Tunneling
Walter Wittke, Ralf Druffel, Claus Erichsen, Jens Gattermann, Johannes Kiehl, Dieter Schmitt, Meinolf Tegelkamp, Martin Wittke, Patricia Wittke-Gattermann, Bettina Wittke-Schmitt
published for downloading in May 2007.
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Validierung eines Berechnungsverfahrens für Tunnelbauwerke in quellfähigem Gebirge
Roman Wahlen
published for downloading in 2009.
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