@article {hossain10,
	title = {Toward High Quality Gradient Estimation on Regular Lattices},
	journal = {IEEE Transactions on Visualization and Computer Graphics},
	volume = {17},
	number = {4},
	year = {2011},
	month = {04/2011},
	pages = {426-439},
	publisher = {IEEE Computer Society},
	address = {Los Alamitos, CA, USA},
	keywords = {Approximation theory, body-centered cubic lattice, box splines, normal reconstruction, orthogonal projection, Taylor series expansion},
	doi = {10.1109/TVCG.2010.37},
	url = {http://doi.ieeecomputersociety.org/10.1109/TVCG.2010.37},
	author = {Zahid Hossain and Usman R. Alim and Torsten M{\"o}ller}
}
