1.
Jäckle A, Lynn P, Burton J. Going Online with a Face-to-Face Household Panel: Effects of a Mixed Mode Design on Item and Unit Non-Response. SRM [Internet]. 2015 Apr. 10 [cited 2024 Mar. 29];9(1):57-70. Available from: https://ojs.ub.uni-konstanz.de/srm/article/view/5475