TY - BOOK A1 - Kirsch, Ansgar T1 - On the face stability of shallow tunnels in sand. (Advances in geotechnical engineering and tunnelling ; 16) Y1 - 2009 UR - https://opus.bibliothek.fh-aachen.de/opus4/frontdoor/index/index/docId/7305 SN - 978-3-8325-2149-3 PB - Logos-Verl. CY - Berlin ER -