@book{85220,
	author = {Atef Mohammed Tawfeek and Iman Elmahallwi , },
	title = {Effect of thermoechanical treatments on mechanical properties and microstructure of 55Cr3 spring steels / },
	publisher = {Atef Mohammed Tawfeek , },
	year = {2003},
	address = {Cairo : },
	url = {http://172.23.153.220/th.pdf}
}