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 | 1975 | |
|---|---|---|
| 2 |      | Anatole Beck: A Necessary and Sufficient Condition for Planar Flows. Mathematical Systems Theory 9(1): 51-56 (1975) |
| 1971 | ||
| 1 | | Anatole Beck: Upper Semi-Continuous Decompositions of an Are. Mathematical Systems Theory 5(4): 292-294 (1971) |