00527naa#a2200181#i#450# EN\\bibl\10827 20241011225429.5 1609-3178 20160330b2016####ek#y0engy0150####ca RUS RU Multiple Ultrasonic Echo Signals in a Plate. Determination and Application Journal article Saint-Petersburg LLC SVEN 2016 3 с. Journal article local Shevaldykin Viktor Bobrov Vladimir Timofeevich naukaru.ru