انتشارات Ecmt
Improving transport accessibility for all: guide to good practice
Organization for Economic Cooperation &, 2006
Competitive tendering of rail services.
OECD, 2007
Report of the Thirty-Sixth Round Table on Transport Economics held in Paris on 29th and 30th November, 1976 on the following topic : cost benefirt analysis
Frost, Michael J.; Frost, Michael John, 1977
