@article {202,
	title = {Natural neighbor extrapolation using ghost points},
	journal = {Computer Aided-Design},
	volume = {41},
	year = {2009},
	pages = {350-365},
	author = {Tom Bobach and Gerald Farin and Dianne Hansford and Georg Umlauf}
}
@conference {190,
	title = {Natural neighbor concepts in scattered data interpolation and discrete function approximation},
	booktitle = {GI Lecture Notes in Informatics, Visualization of Large and Unstructured Data Sets},
	year = {2007},
	author = {Tom Bobach and Georg Umlauf},
	editor = {H.~Hagen and M.~Hering-Bertram and C.~Garth}
}
@article {191,
	title = {Normals of subdivision surfaces and their control polyhedra},
	journal = {Computer Aided Geometric Design},
	volume = {24},
	year = {2007},
	pages = {112-116},
	author = {Ingo Ginkel and J{\"o}rg Peters and Georg Umlauf}
}
@conference {189,
	title = {Natural neighbor interpolation and order of continuity},
	booktitle = {GI Lecture Notes in Informatics, Visualization of Large and Unstructured Data Sets},
	year = {2006},
	author = {Tom Bobach and Georg Umlauf},
	editor = {H.~Hagen and A.~Kerren and P.~Dannenmann}
}
@conference {215,
	title = {On normals and control nets},
	booktitle = {Mathematics of Surfaces XI},
	year = {2005},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	author = {Ingo Ginkel and J{\"o}rg Peters and Georg Umlauf},
	editor = {R.~Martin and H.~Bez and M.~Sabin pages = 233-239}
}
