@article{DeLeMa2005,
	Author = {M. Desbrun and M. Leok and {J. E.} Marsden},
	Fjournal = {Applied Numerical Mathematics},
	Journal = {Appl. Numer. Math.},
	Number = {2--4},
	Pages = {231-248},
	Title = {Discrete {P}oincar\'e Lemma},
	Volume = {53},
	Year = {2005},
	doi = {10.1016/j.apnum.2004.09.035},
}