Number | Date | Country | Kind |
---|---|---|---|
3435836 | Sep 1984 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3361936 | Umantsev | Jan 1968 |
Number | Date | Country |
---|---|---|
2035646 | Mar 1971 | DEX |
2111520 | Sep 1971 | DEX |
Entry |
---|
IBM Bulletin, Hafer, vol. 21, No. 11, p. 4634, 4-1979. |
Elektronik, No. 16, 1979, pp. 39-45. |
Elektronik, No. 14, 1979, pp. 45-55. |