00723naa#a2200217#i#4500001002100000003001700021005001700038011001400055100004100069101000800110102000700118200016500125210005100290215001100341608002700352700001800379700001700397700003100414700002100445856003900466EN\INFRA-M\bibl\5901/en/manage/index20250415224736.2##a1998-071X##a20150425b2015####ek#y0engy0150####ca0#aRUS##aRU1#aChange in the Natural Vibration Frequency Spectrum of the Steel Pipe Mathematic Model Depending on Sizes, Location, and Number of Local DefectseJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2015##a12 с.##aJournal article2local#1aSuslonovgA. #1aSamaringV. #1aSushchevgSergey Petrovich#1aNovgorodovagA. 4#atest.editorum.ruu/en/manage/index