@book{95397,
	author = {Lilienthal, Otto,},
	title = {Der Vogelflug als Grundlage der Fliegekunst :},
	publisher = {Project Gutenberg,},
	year = {2017},
	address = {Salt Lake City, UT :},
	note = {Release date is 2017-04-18},
	url = {https://www.gutenberg.org/ebooks/54565}
}