1. Alton , Thad . 1981a. “‘Economic Growth in Eastern Europe, 1965, 1970 and 1975–1980’”. New York: Research Project on National Income in East Central Europe. OP‐65, 1981
2. Alton , Thad . 1985a. “‘Economic Growth in Eastern Europe, 1970 and 1975–1984’ OP‐85”. New York: L.W. International Research, Inc. 1985
3. _____ . 1985b. “‘Eastern Europe: Domestic Final Uses of Gross Product, 1970 and 1975–1984’ OP‐85”. New York: L.W. International Research Inc. 1985
4. _____ . 1981b. “‘Eastern Europe: Domestic Final Uses of Gross Product, Selected Years, 1965, 1970 and 1975–1980’”. New York: Research Project on National Income in East and Central Europe. OP‐66, 1981.
5. _____ . 1981c. “‘Official and Alternative Consumer Price Indexes in Eastern Europe, Selected Years, 1960–1981’”. New York: Research Project on National Income in East Central Europe. OP‐63, 1982.