@article{KumarSinghMishraetal.2015,
  author    = {S. Kumar and I. Singh and B.K. Mishra and Timon Rabczuk},
  title     = {Modeling and Simulation of Kinked Cracks by Virtual Node XFEM},
  journal   = {Computer Methods in Applied Mechanics and Engineering},
  pages     = {1425 -- 1466},
  year      = {2015},
}