How online lurking contributes value to e-participation : a conceptual approach to evaluating the role of lurkers in e-participationEdelmann, Noella; Krimmer, Robert Johannes; Parycek, Peter2017 Fourth International Conference on eDemocracy & eGovernment (ICEDEG 2017) : Quito, Ecuador, 19-21 April 20172017 / p. 86-93 https://doi.org/10.1109/ICEDEG.2017.7962517