| Program International Symposium on Algorithmic Languages
Letter, A.P. Ershov->A. A. Dorodnitsyn, 06.08.1981
Lettter (hand-written draft), A.P. Ershov->van Vliet, J. C., 07.08.1981
Letter, van Vliet, J. C.->A.P. Ershov, 30.07.1981The Invitation on behalf of Professor van Wijngaarden to an additional small and exquisite Dinner Party
Letter (hand-written draft), A.P. Ershov->van Vliet, J. C., 21.08.1981The Author thanks for the Invitation to the party? he would be happy to join the company provided that he'll be able to come to the Symposium
Telegran (draft), A.P. Ershov->van Vliet, J. C., 19.10.1981Informing of arrival time
Telegram (draft), A.P. Ershov->F. E. Dijkstra, 19.10.1981The Author asks about Posibility to visit the Addressee
Telegram (draft), A.P. Ershov->W. Dijkhuis, 19.10.1981ng of arrival time
Telegram, E. W. Dijkstra ->A.P. Ershov, 22.10.1981about Collection at the Airport Schiphol
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