Aviation Spending Guarantee Mechanisms, report, March 25, 2008; (https://digital.library.unt.edu/ark:/67531/metadc808596/m1/7/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .
Aviation Spending Guarantee Mechanisms, report, March 25, 2008; (https://digital.library.unt.edu/ark:/67531/metadc808596/m1/7/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .