Gamification of Online Surveys: Design Process, Case Study, and Evaluation. - Johannes Harms; Stefan Biegler; Christoph Wimmer; Karin Kappel; Thomas Grechenig (INTERACT (1), 2015)

SQT: A tool for the automated measurement of respondent behaviour and response quality in health-related gamified online surveys. - Christoph Wimmer; Stefan Biegler; Johannes Harms; Karin Kappel; Thomas Grechenig (SeGAH, 2018)