Letter The author regrets to inform that - because of unforeseen difficulties - the forthcoming meeting of IFIP/WG2.3 (Hungary, 16-20.06.1986) is cancelled. A new date will be informed in time. Date: 27.05.1986 Original document language: English Authors: Balint Domolki Organizations: John V. Neumann Society for Computing Sciences Addressee: Andrei Petrovich Ershov