@article {Manion200772,
	title = {Performance-specified maintenance contracts adding value through improved safety performance},
	journal = {Transportation Research Record},
	number = {1990},
	year = {2007},
	note = {cited By 8},
	pages = {72-79},
	doi = {10.3141/1990-09},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-38349090151\&doi=10.3141\%2f1990-09\&partnerID=40\&md5=11260fedfb33a275d3d6977fb39b7a62},
	author = {Manion, M. and Tighe, S.L.}
}
