Letter Being IFIP 80 PC member Ershov will be able to visit Amsterdam several times. He will be glad to stay in September in Netherlands one or two days more for seeing van Wijngaarden and Dijkstra. Date: 18.07.1978 Original document language: English Authors: Andrei Petrovich Ershov Persons: Edsger W. Dijkstra Addressee: Aad van Wijngaarden
