@book{1871,
	author = {Bertuglia, Cristoforo Sergio.},
	title = {Modelling the city :},
	publisher = {Routledge,},
	year = {1994.},
	address = {London ;},
	url = {http://www.loc.gov/catdir/enhancements/fy0648/93037380-d.html}
}