@book{179,
	author = {Powell, Martin},
	title = {About Challenges},
	publisher = {UrbanNext,},
	year = {December 19, 2015.},
	note = {Energy and sustainability, ENTR ECOT, High Density, Martin Powell, Middle Density, SCEWC, Senseable Technologies, Smart City Expo World, Talk, Technology and fabrication},
	url = {https://urbannext.ovh/about-challenges/}
}