@article {tesfamariam2006combined,
	title = {Combined stress wave techniques to estimate concrete strength},
	journal = {Materials evaluation},
	volume = {64},
	number = {12},
	year = {2006},
	pages = {1173{\textendash}1179},
	author = {Tesfamariam, Solomon and Sadri, Afshin and Thomas, Michael}
}
