@book{1205,
	author = {Sailer, Gregor ‎},
	title = {Closed Cities},
	publisher = {UrbanNext,},
	year = {December 26, 2019.},
	note = {Gregor Sailer, Middle Density, Survey, Territory and mobility, Urban Paradigms},
	url = {https://urbannext.net/closed-cities/}
}