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// Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika
// Archive
Izv. Vyssh. Uchebn. Zaved. Mat.,
1960
Number 6,
Pages
184–194
(Mi ivm2341)
This article is cited in
1
paper
Focal-directrix properties of curves of second order on the Lobachevsky plane
S. L. Pevzner
Received:
12.11.1958
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