@article {Logg.2006.3,
	title = {Topological Optimization of the Evaluation of Finite Element Matrices},
	journal = {SIAM J. Sci. Comput.},
	volume = {28},
	number = {1},
	year = {2006},
	pages = {224-240},
	author = {Robert C. {Kirby} and Logg, Anders and Scott, Ridgway and Andy R. {Terrel}}
}
