Finck, Michele MPI for Innovation and Competition, Max Planck Society;
http://oxcon.ouplaw.com/view/10.1093/law-mpeccol/law-mpeccol-e296 (Publisher version)
Finck, M. (2017). The Principle of Loyalty in Federations. In R. Wolfrum, F. Lachenmann, & R. Grote (Eds.), Max Planck Encyclopaedia of Comparative Constitutional Law (MPECCoL). Oxford: Oxford Constitutional Law.