There is cooperation in terms of seminars in the area of tax law between the Chair for Tax and Public law and Universidad Nacional de Educación a Distancia (UNED) in Madrid, Universitat de Barcelona in Barcelona, Universitá Niccolò Cusano in Rome Sapienza University also in Rome. Since 2010 as part of the collaboration four seminars have been held so far, with these being organised on an alternating basis. You can find reports on these in the following links:
The report on the first seminar event in February 2010 in Madrid can be found here.
The report on the second seminar event in July 2010 in Düsseldorf can be found here.