@article{1221,
  author = {Heng Chi and Glaucio Paulino},
  title = {On variational formulations with rigid-body constraints for finite elasticity: Applications to 2D and 3D finite element simulations},
  year = {2016},
  journal = {Mechanics Research Communications},
  volume = {78},
  pages = {15{\textendash}26},
  publisher = {Elsevier},
}