Michelsen, A. (2001). Polycentry in the Sources of Tax Law. I Krister Andersson, Peter Melz and Christer Silfverberg (red.) (red.), Liber Amicorum Sven-Olof Lodin (s. s. 173-186). Kluwer Academic Publishers.
Germer, P., Blackburn, R. (red.) & Polakiewicz, J. (red.) (2001). Report on "Denmark" I Fundamental Rights in Europe: The ECHR and Its Member States, 1950-2000 (s. 259-276). Oxford University Press.