in reply to the letter of Feb. 4, 1981 concerning two potential contributions by Letichevsky and Ostrovsky

a paper by Ershov&Ostrovsky has been accepted for presentation at the WC

a request to consider 3 papers by Soviet authors directly at the PC meeting

Congratulations with the new title

a typed copy of the paper abstract

Kindly request to consider three sent contributions at the PC meeting.

a hand-written variant of the paper

a typed copy of the paper by A.P. Ershov and B.N. Ostrovsky

of a paper "Implementation of controllable mixed computation into system for the automatic development of language-oriented parsers" by Ershov&Ostrovsky

about a preparation for participation in International Workshop on Partial Evaluation and Mixed Computation; a request to help Boris N.Ostrovsky in a preparation for Workshop. /Handwritten text./

with the list of Soviet participants invited at the cost of Organizing Committee

of Ershov&Ostrovsky paper "Controllable Mixed Computation and its Application to Systematic Development of Language-Oriented Parsers" presented at the Working Conference

by B. N. Ostrovsky.

Russian variant of the paper submitted to the Working Conference

a typed copy of the talk at the Working Conference

with a table: programming languages and lengths of the corresponding programs

with a flow diagram