Celebrating 10 years: Web Survey Methology book

Authors (8941)

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Wolff, H.-G.

Name:Wolff, H.-G.

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Hans-Georg Wolff

University of Erlangen—Nürnberg

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Web survey bibliography

Payments via Paypal as an Incentive in Online Panels...; 2009; Goeritz, A., Wolff, H.-G., Goldstein, D. G.
Individual payments as a longer-term incentive in...; 2008; Goeritz, A., Wolff, H.-G., Goldstein, D. G.