@book{47148,
	author = {Donnelly, Ignatius,},
	title = {Ragnarok : the Age of Fire and Gravel},
	publisher = {Project Gutenberg,},
	year = {2004},
	address = {Salt Lake City, UT :},
	note = {Wikipedia page about this book: https://en.wikipedia.org/wiki/Ragnarok:_The_Age_of_Fire_and_Gravel},
	url = {https://www.gutenberg.org/ebooks/5109}
}