@book{89151,
	author = {Frege, Gottlob,},
	title = {Die Grundlagen der Arithmetik :},
	publisher = {Project Gutenberg,},
	year = {2015},
	address = {Salt Lake City, UT :},
	note = {Wikipedia page about this book: https://en.wikipedia.org/wiki/The_Foundations_of_Arithmetic Wikipedia page about this book: https://de.wikipedia.org/wiki/Die_Grundlagen_der_Arithmetik},
	url = {https://www.gutenberg.org/ebooks/48312}
}