@article{HaefnerEckardtLutheretal.2006,
  author    = {Stefan H{\"a}fner and Stefan Eckardt and Torsten Luther and Carsten K{\"o}nke},
  title     = {Mesoscale modeling of concrete: Geometry and numerics},
  journal   = {Computers and Structures},
  pages     = {450 -- 461},
  year      = {2006},
}