User studies in cartography: opportunities for empirical research on interactive maps and visualizations - Roth, Robert E.; Çöltekin, Arzu; Delazari, Luciene Stamato; Fonseca Filho, Homero; Griffin, Amy; Hall, Andreas; Korpi, Jari; Lokka, Ismini; Mendonça, André; Ooms, Kristien; Elzakker, Corné P.J.M. van (International Journal of Cartography, 2017)