@article{11203,
  author = {Marie Rognes and Robert Kirby and Anders Logg},
  title = {Efficient Assembly of H(div) and H(curl) Conforming Finite Elements},
  year = {2009},
  journal = {SIAM Journal on Scientific Computing},
  volume = {36},
  number = {6},
  pages = {4130-4151},
}