@article{NanthakumarLahmerRabczuk2016,
  author    = {S.S. Nanthakumar and Tom Lahmer and Timon Rabczuk},
  title     = {Detection of multiple flaws in piezoelectric structures using XFEM and level sets},
  journal   = {International Journal for Numerical Methods in Engineering},
  pages     = {960},
  year      = {2016},
}