Wiseman, S., A. L. Cox, S. J. J. Gould, and D. P. Brumby. “Exploring the Effects of Non-Monetary Reimbursement for Participants in HCI Research”. Human Computation, vol. 4, no. 1, Apr. 2017, pp. 1-24, doi:10.15346/hc.v4i1.1.