On the crossing of extremals at focal points (Q5845801)
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scientific article; zbMATH DE number 3106989
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | On the crossing of extremals at focal points |
scientific article; zbMATH DE number 3106989 |
Statements
On the crossing of extremals at focal points (English)
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1943
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