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JOURNALS
// Zapiski Nauchnykh Seminarov POMI
// Archive
Zap. Nauchn. Sem. LOMI,
1967
Volume 4,
Pages
69–77
(Mi znsl2210)
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Deductive validity and reduction classes
V. A. Lifshits
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Steklov Math. Inst. of RAS
, 2025
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