Hopt, Klaus J. MPI for Comparative and International Private Law, Max Planck Society;
https://www.wiso-net.de:443/document/HB__1787840E-B41A-46FC-81EF-AB2F9679D5BE%7CHBPM__1787840E-B41A-46FC-81EF-AB2F9679D5BE (Any fulltext)
Hopt, K. J. (2015). Transparenz anders schaffen < ad EU-Kommission, Related Party Transactions >. Handelsblatt, 13.