@article {fehr_12_bilder,
	title = {Bilder berechnen - nicht nur aufnehmen},
	journal = {Optik \& Photonik},
	volume = {7},
	year = {2012},
	pages = {50-53},
	doi = {10.1002/opph.201290021},
	author = {Fehr, J. and Bernd J{\"a}hne}
}
