@book{72757,
	author = {Vogt, Wolfgang,},
	title = {Synthetische Theorie der Cliffordschen Parallelen und der Linearen Linienörter des Elliptischen Raumes},
	publisher = {Project Gutenberg,},
	year = {2010},
	address = {Salt Lake City, UT :},
	note = {Release date is 2010-04-07},
	url = {https://www.gutenberg.org/ebooks/31911}
}