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JOURNALS // Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika // Archive
Izv. Vyssh. Uchebn. Zaved. Mat., 1962 Number 6, Pages 3–13 (Mi ivm2107)
Transformations of surfaces by focal families of rays.

M. A. Akivis

Moscow State Institute of Steel and Alloys

Received: 02.11.1959



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© Steklov Math. Inst. of RAS, 2026