@book{3079,
	author = {Amr Mahmoud Samy Mohamed Elhefny and Abdelrahman Abdelftah Ragab , },
	title = {Mechanical and metallurgical evaluation of Cr - Ni - Mo iron - base superalloy used in gas turbines / },
	publisher = {Amr Mahmoud Samy Mohamed Elhefny , },
	year = {2007},
	address = {Cairo : },
	url = {http://172.23.153.220/th.pdf}
}