@patent {28195,
	title = {Method of controlling a powder sprayer and printing press having a powder sprayer},
	volume = {7942096},
	year = {2011},
	edition = {United States of America},
	chapter = {US},
	url = {https://patents.google.com/patent/US7942096B2/en},
	author = {Peter Theobald Blaser and Claudius Haas and Marius Stelter}
}