@book{102300,
	author = {Van Millingen, Alexander,},
	title = {Byzantine Constantinople, the walls of the city and adjoining historical sites},
	publisher = {Project Gutenberg,},
	year = {2020},
	address = {Salt Lake City, UT :},
	note = {Release date is 2020-02-21},
	url = {https://www.gutenberg.org/ebooks/61475}
}