TY  - CONF
A1  - Kirsch, Ansgar
T1  - Experimental and numerical investigation of the face stability of shallow tunnels in sand
T2  - Safe tunnelling for the city and environment : proceedings of the World Tunnel Congress 2009, Budapest, Hungary, 23 to 28 September 2009 / organised by International Tunnelling and Underground Space Association ...
Y1  - 2009
UR  - https://opus.bibliothek.fh-aachen.de/opus4/frontdoor/index/index/docId/7325
SP  - 1
EP  - 8
PB  - Hungarian Tunnelling Association
CY  - Budapest
ER  -