@book{608504,
	author = {ISLAM ,TAYYAB UL  and Supervisor : DR RIAZ AHMAD MUFTI},
	title = {Tribological Study of Friction in Roller Follower Valve Train Considering Effects of Asperity Interaction and Roller Sliding /},
	publisher = {SMME- NUST. },
	year = {2019.},
	address = {Islamabad: },
	url = {http://10.250.8.41:8080/xmlui/handle/123456789/12473}
}