As vast majority all of the Trainers and Trainees canceled their participation at the Training School, its organization in October 1-5, 2020 is canceled. Based on discussion with COST Assoc., the organization of the Training School will be postponed to February, 2021. All invited participants are asked to cancel all bookings immediately to prevent any losses from cancelation fees. Darko Mitrovic, as Local Organizer, apologizes for such an outcome.