@book{78919,
	author = {Hardy, G. H.},
	title = {Orders of Infinity: The 'Infinitärcalcül' of Paul Du Bois-Reymond},
	publisher = {Project Gutenberg,},
	year = {2011},
	series = {Cambridge Tracts in Mathematics and Mathematical Physics, No. 12},
	address = {Salt Lake City, UT :},
	note = {Release date is 2011-11-21},
	url = {https://www.gutenberg.org/ebooks/38079}
}