@book{199,
	author = {Maas, Winy},
	title = {Eco-cities},
	publisher = {UrbanNext,},
	year = {December 31, 2015.},
	note = {Concept, Energy and sustainability, High Density, Middle Density, Verb Next, Winy Maas},
	url = {https://urbannext.ovh/eco-cities/}
}