RT Journal Article SR Electronic T1 Shadow Tolls and Public-Private Partnerships for Transportation Projects JF The Journal of Structured Finance FD Institutional Investor Journals SP 30 OP 37 DO 10.3905/jsf.3.2.30 VO 3 IS 2 A1 Tillman, Raymond YR 1997 UL http://jsf.pm-research.com/content/3/2/30.abstract AB