1.
Olson K, Lepkowski JM, Garabrant DH. An Experimental Examination of the Content of Persuasion Letters on Nonresponse Rates and Survey Estimates in a Nonresponse Follow-Up Study. SRM [Internet]. 2011 Apr. 30 [cited 2024 Jul. 20];5(1):21-6. Available from: https://ojs.ub.uni-konstanz.de/srm/article/view/4324