@article{Suslonov2015change,
author={Suslonov, A.. and Samarin, V.. and Sushchev, S.P. and Novgorodova, A..},
title={Change in the Natural Vibration Frequency Spectrum of the Steel Pipe Mathematic Model Depending on Sizes, Location, and Number of Local Defects},
journal={Safety in Technosphere},
publisher={INFRA-M Academic Publishing LLC.},
year={2015},
pages={3-15},
volume={4},
issue={2},
}