Engel, Christoph Max Planck Institute for Research on Collective Goods, Max Planck Society;
Hamann, Hanjo Max Planck Institute for Research on Collective Goods, Max Planck Society;
http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2046484 (全文テキスト(全般))
http://www.coll.mpg.de/pdf_dat/2012_08online.pdf (プレプリント)
Engel, C., & Hamann, H. (2012). The Hog-Cycle of Law Professors.