TY - JOUR A1 - Tran, Thanh Ngoc A1 - Kreißig, R. A1 - Vu, Duc Khoi A1 - Staat, Manfred T1 - Upper bound limit and shakedown analysis of shells using the exact Ilyushin yield surface T2 - Computer & Structures. 86 (2008) Y1 - 2008 UR - https://opus.bibliothek.fh-aachen.de/opus4/frontdoor/index/index/docId/3583 SN - 0045-7949 SP - 1683 EP - 1695 ER -