@unpublished{DeHiLeMa2003,
	Author = {M. Desbrun and {A. N.} Hirani and M. Leok and {J. E.} Marsden},
	Title = {Discrete Exterior Calculus},
	Note = {(preprint, \href{http://arXiv.org/math.DG/0508341}{\tt arXiv:math.DG/0508341})},
	Year = {2003},
}