00602naa#a2200193#i#450# EN\\bibl\10826 20250115023417.3 1609-3178 20160330b2016####ek#y0engy0150####ca RUS RU Actual Technologies and Instruments for Polymer Composite Materials Testing with Through Transmission Ultrasonic Technique Journal article Saint-Petersburg LLC SVEN 2016 4 с. Journal article local Generalov Aleksandr S. Trifonova Svetlana Dalin Mikhail naukaru.ru