All bonds issued under this article shall have a lien upon the revenues and receipts derived from the qualified project for which the bonds have been issued, and the ordinance authorizing the bonds may provide for issuance of additional bonds to be equally and ratably secured by a lien upon such income and revenues, or may provide that the lien upon such income and revenues shall be subordinate. (Ord. 0-06-21, 5-1-2006)