Dear all, Recently Marian Fabian and Gilles Godefroy had seminar lectures at Adam Mickiewicz University in Poznań, Poland. Below are links to the recordings. All the best, Wieslaw https://youtu.be/0j40DftoG9U (G. Godefroy) https://youtu.be/JbdqVe94Y4c (M. Fabian)