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JOURNALS
// Doklady Akademii Nauk
// Archive
Dokl. Akad. Nauk SSSR,
1968
Volume 181,
Number 5,
Pages
1073–1076
(Mi dan34047)
MATHEMATICS
Group properties (in the large) of second order partial differential equations
I. I. Tugov
P. N. Lebedev Physical Institute, the USSR Academy of Sciences, Moscow
UDC:
517.944+519.46
Presented:
L. I. Sedov
Received: 16.11.1967
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