Fleckner, Andreas M. MPI for Comparative and International Private Law, Max Planck Society;
https://hwb-eup2009.mpipriv.de/index.php/B%C3%B6rsen (Any fulltext)
Fleckner, A. M. (2009). Börsen. In J. Basedow, K. J. Hopt, & R. Zimmermann (Eds.), Handwörterbuch des Europäischen Privatrechts (pp. 224-229). Tübingen: Mohr Siebeck.