@article {restle_04_nonparametric,
	title = {Nonparametric Smoothing of Height maps using {\textquoteleft}{\textquoteleft}Confidence{\textquoteright}{\textquoteright} values},
	journal = {Optical Engineering},
	volume = {43},
	number = {0049},
	year = {2004},
	pages = {866-871},
	doi = {10.1117/1.1666622},
	author = {J. Restle and Hissmann, M. and Fred A. Hamprecht}
}
