The use of ultrasonic guided waves and wavelets analysis in pipe inspection. Siqueira, M., Gatts, C., da Silva, R., & Rebello, J. Ultrasonics, 41(10):785–797, May, 2004.
The use of ultrasonic guided waves and wavelets analysis in pipe inspection [link]Paper  doi  bibtex   
@article{siqueira_use_2004,
	title = {The use of ultrasonic guided waves and wavelets analysis in pipe inspection},
	volume = {41},
	issn = {0041624X},
	url = {http://linkinghub.elsevier.com/retrieve/pii/S0041624X04001246},
	doi = {10.1016/j.ultras.2004.02.013},
	language = {en},
	number = {10},
	urldate = {2015-10-27TZ},
	journal = {Ultrasonics},
	author = {Siqueira, M.H.S. and Gatts, C.E.N. and da Silva, R.R. and Rebello, J.M.A.},
	month = may,
	year = {2004},
	pages = {785--797}
}

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