@article{11160,
  author = {Robert Kirby and Matthew Knepley and Anders Logg and Ridgway Scott},
  title = {Optimizing the Evaluation of Finite Element Matrices},
  year = {2005},
  journal = {SIAM J. Sci. Comput.},
  volume = {27},
  number = {3},
  pages = {741-758},
}