@conference {khedr2009cleaning,
	title = {Cleaning Of Black Crust From Marble Substrate By Short Free Running $μ$s Nd: YAG Laser},
	booktitle = {THE 7TH INTERNATIONAL CONFERENCE ON LASER APPLICATIONS{\textemdash}ICLA 2009},
	volume = {1172},
	number = {1},
	year = {2009},
	note = {n/a},
	pages = {91{\textendash}94},
	publisher = {AIP Publishing},
	organization = {AIP Publishing},
	abstract = {n/a},
	author = {A. Khedr and P. Pouli and Fotakis, C and M.A. Harith}
}
