Media type: E-Article Title: Free-Riding on Altruistic Punishment? An Experimental Comparison of Third-Party Punishment in a Stand-Alone and in an In-Group Environment Contributor: Lewisch, Peter G.; Ottone, Stefania; Ponzano, Ferruccio imprint: Walter de Gruyter GmbH, 2011 Published in: Review of Law & Economics Language: Not determined DOI: 10.2202/1555-5879.1460 ISSN: 1555-5879 Keywords: Law ; General Economics, Econometrics and Finance Origination: Footnote: