@article{article, title = {{Designing Focus Groups and Experiments to Evaluate Policy Approaches and Measures for Tackling Undeclared Work}}, publisher = {{Elsevier BV}}, url = {{}}, year = {{2015}}, month = {{2}}, author = {{Polak M and Mishkov L and Williams C}}, doi = {{10.2139/ssrn.2565389}}, journal = {{SSRN Electronic Journal}}, note = {{Accessed on 2024/12/22}}}