@article{NguyenThoiPhungVanRabczuketal.2013,
  author    = {T. Nguyen-Thoi and P. Phung-Van and Timon Rabczuk and Hung Nguyen-Xuan and C. Le-Van},
  title     = {Free and forced vibration analysis using the n-sided polygonal cell-based smoothed finite element method (nCS-FEM)},
  journal   = {International Journal of Computational Methods},
  year      = {2013},
}