00546naa#a2200169#i#4500001001500000005001700015011001400032100004100046102000700087200014500094210003700239215001000276608002700286700002200313700002600335856001500361EN\\bibl\4334820240911181420.3##a1609-3178##a20210514b2021####ek#y0engy0150####ca##aRU1#aMethod for Operational Diagnostics of the Prepumping State of Gas Turbine Engines Based on Invariants of Acoustic ProcesseseJournal article1#aSaint-PetersburgcLLC SVENd2021##a3 с.##aJournal article2local#1aPopovgAleksey V.#1aRomanovgAleksandr A.4#anaukaru.ru