@book{79764,
	author = {Haeckel, Ernst,},
	title = {Les énigmes de l'Univers},
	publisher = {Project Gutenberg,},
	year = {2012},
	address = {Salt Lake City, UT :},
	note = {Wikipedia page about this book: https://fr.wikipedia.org/wiki/Les_%C3%89nigmes_de_l%27Univers_(Haeckel)},
	url = {https://www.gutenberg.org/ebooks/38925}
}