@book{47037,
	author = {Leonardo, da Vinci, and Richter, Jean Paul,},
	title = {The Notebooks of Leonardo Da Vinci — Volume 1},
	publisher = {Project Gutenberg,},
	year = {2004},
	address = {Salt Lake City, UT :},
	note = {Release date is 2004-01-01},
	url = {https://www.gutenberg.org/ebooks/4998}
}