@book{109468,
	author = {Parsons, Frank,},
	title = {The heart of the railroad problem :},
	publisher = {Project Gutenberg,},
	year = {2022},
	address = {Salt Lake City, UT :},
	note = {Release date is 2022-08-01},
	url = {https://archive.org/details/cu31924070647270}
}