Queiroga, V., Belchior, Ana Maria, Serra-Silva, Sofia, Hugo Lopes, Rodrigues, R., Jorge, P....Alves, A. Matias (2018). The Use of Web surveys in Political Science Research: A Meta-Analysis of the Scope and Focus of a Rising Trend (2005-2015). The Use of Web surveys in Political Science Research: A Meta-Analysis of the Scope and Focus of a Rising Trend (2005-2015).