@article{StaatHeitzer2005,
  author    = {Manfred Staat and M. Heitzer},
  title     = {Limit and Shakedown Analysis Using a General Purpose Finite Element Code},
  journal   = {Proceedings of NAFEMS World Congress '97 on Design, Simulation \& Optimisation : reliability \& applicability of computational methods ; Stuttgart, Germany, 9 - 11 April 1997},
  pages     = {522 -- 533},
  year      = {2005},
}