Head of the Centre of Tax Documentation and Studies on Lódź, head of Material Tax Law Department at Law and Administration Faculty, University of Łódź, member of the International Fiscal Association in Poland, member of the Legislative Council, author and co-author of more than a hundred publications on tax law and balance sheet law, lecturer at law departments of universities in Bologna, Bari, Taranto (Italy), in Grenoble and Tours - as professeur invité (France) as well as Wirtschafts Universität in Wienna (Austria).