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JOURNALS
// Doklady Akademii Nauk
// Archive
Dokl. Akad. Nauk SSSR,
1969
Volume 185,
Number 3,
Pages
503–506
(Mi dan34507)
MATHEMATICS
The invariance of discrete systems
V. V. Velichenko
Moscow Institute of Physics and Technology
Presented:
B. N. Petrov
Received: 11.07.1968
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Steklov Math. Inst. of RAS
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