@book{164130,
	author = {Rana saleh abdulrahman al-silani, and Rasha Nabil Sami},
	title = {Evaluation of colour stability and surface roughness of three cad/cam materials (ips e.max, vita enamic, and peek) after immersion in two beverage solutions /},
	year = {2021.},
	url = {http://172.23.153.220/th.pdf}
}