1.
Castiglioni L, Pforr K, Krieger U. The Effect of Incentives on Response Rates and Panel Attrition: Results of a Controlled Experiment. SRM [Internet]. 2008 Dec. 19 [cited 2024 Apr. 26];2(3):151-8. Available from: https://ojs.ub.uni-konstanz.de/srm/article/view/599