Kumpan, Christoph MPI for Comparative and International Private Law, Max Planck Society;
https://max-eup2012.mpipriv.de/index.php/Financial_Instruments (Any fulltext)
Kumpan, C. (2012). Financial Instruments. In J. Basedow, K. J. Hopt, & R. Zimmermann (Eds.), The Max Planck Encyclopedia of European Private Law (pp. 697-701). Oxford: Oxford University Press.