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- Language: English
- Year: 1969
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- Language: English
- Author: S. I. Gelfand M. L. Gerver A. A. Kirillov N. N. Konstantinov A. G. Kushnirenko
- Language: English
- Year: 1969
- Author: Fichtenholz G.
- Language: English
- Year: 1970
- Author: Dynkin E.B. et al.
- Language: English
- Year: 1969