Munnich, Lee; Douma, Frank; Loveland, Joe: 'The public acceptability of road pricing—a US case study' (Transportation, 2018), 'Road Pricing: Technologies, economics and acceptability', Chap. 5, pp. 125-148, DOI: 10.1049/PBTR008E_ch5
IET Digital Library, https://digital-library.theiet.org/;jsessionid=sqtjb493casg.x-iet-live-01content/books/10.1049/pbtr008e_ch5