@article{UngerTeughelsDeRoeck2005,
  author    = {J{\"o}rg F. Unger and A. Teughels and G. De Roeck},
  title     = {Damage detection of a prestressed concrete beam using modal strains},
  journal   = {Journal of Structural Engineering},
  pages     = {1456 -- 1463},
  year      = {2005},
}