@article {647, title = {Privacy-Preserving Data Aggregation in Smart Metering Systems: An Overview}, journal = {IEEE Signal Processing Magazine}, volume = {30}, year = {2013}, month = {03/2013}, pages = {75-86}, keywords = {SPED}, author = {Zekeriya Erkin and Juan Ram{\'o}n Troncoso-Pastoriza and Reginald Lagendijk and Fernando P{\'e}rez-Gonz{\'a}lez} }