TY - JOUR T1 - Towards a Standard Sampling Methodology on Online Social Networks: Collecting Global Trends on Twitter JF - Applied Network Science Y1 - 2016 A1 - C. A. Piña-García A1 - Carlos Gershenson A1 - J. Mario Siqueiros-García VL - 1 UR - http://dx.doi.org/10.1007/s41109-016-0004-1 ER -