TY - JOUR T1 - Privacy-Preserving Data Aggregation in Smart Metering Systems: An Overview JF - IEEE Signal Processing Magazine Y1 - 2013 A1 - Zekeriya Erkin A1 - Juan Ramón Troncoso-Pastoriza A1 - Reginald Lagendijk A1 - Fernando Pérez-González KW - SPED VL - 30 IS - 2 ER -