@article{hughes2005isogeometric,
  title={Isogeometric analysis: CAD, finite elements, NURBS, exact geometry and mesh refinement},
  author={Hughes, Thomas JR and Cottrell, John A and Bazilevs, Yuri},
  journal={Computer methods in applied mechanics and engineering},
  volume={194},
  number={39},
  pages={4135--4195},
  year={2005},
  publisher={Elsevier}
}

@article{nguyen2015isogeometric,
  title={Isogeometric analysis: an overview and computer implementation aspects},
  author={Nguyen, Vinh Phu and Anitescu, Cosmin and Bordas, St{\'e}phane PA and Rabczuk, Timon},
  journal={Mathematics and Computers in Simulation},
  volume={117},
  pages={89--116},
  year={2015},
  publisher={Elsevier}
}