@book{5503,
	author = {GSMA (Organization)‏},
	title = {Mobile Big Data for a Better Future },
	publisher = {GSM Association,},
	year = {2019},
	address = {London :},
	url = {https://www.gsma.com/betterfuture/wp-content/uploads/2019/10/2019-GSMA-Mobile-Big-Data-for-a-Better-Future_Full-Report-1.pdf},
}