@conference {geissler1995,
	title = {Measurements of bubble size distributions with an optical technique based on depth from focus},
	booktitle = {Air-Water Gas Transfer, Selected Papers, 3rd Intern. Symp. on Air-Water Gas Transfer},
	year = {1995},
	pages = {351--362},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10400},
	author = {Peter Gei{\ss}ler and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
