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Scientific notes and problems
On the number of characteristic directions
L. É. Reiziņš
Received: 11.01.1960
Citation:
L. É. Reiziņš, “On the number of characteristic directions”, Russian Math. Surveys, 19:5 (1964)
Linking options:
https://www.mathnet.ru/eng/rm6253 https://www.mathnet.ru/eng/rm/v19/i5/p135
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