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JOURNALS
// Doklady Akademii Nauk
// Archive
Dokl. Akad. Nauk SSSR,
1957
Volume 113,
Number 6,
Pages
1214–1217
(Mi dan21864)
MATHEMATICS
Second order invariants of the quaternary differential quadratic form
P. I. Petrov
N. G. Chebotarev Research Institute of Mathematics and Mechanics, Kazan State University
Presented:
I. M. Vinogradov
Received: 13.03.1956
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Steklov Math. Inst. of RAS
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