The foundation may from time to time issue negotiable revenue bonds. The proceeds of the sale of the bonds issued pursuant to the Educational Assistance Act may be used to fund reserves for the bonds, to pay interest on the bonds and to pay the necessary expenses of issuing the bonds, including bond counsel and fiscal advisory fees and other legal, consulting and printing fees and costs. All bonds may be issued in one or more series. The bonds of each issue shall be dated and bear interest payable as prescribed by the foundation. The bonds shall mature serially or otherwise not later than thirty years from their date and may be redeemable before maturity, at the option of the foundation, at prices and under terms and conditions fixed by the foundation in its resolution or trust agreement providing for issuance of the bonds. The resolution or trust agreement shall also determine the form of the bonds, including the form of any interest coupons to be attached to the bonds, and shall fix the denominations of the bonds and the place of the payment of the principal and interest of the bonds. The bonds shall be executed on behalf of the foundation as special obligations of the foundation payable only from the funds specified in the Educational Assistance Act and shall not be a debt of the state, any eligible post-secondary institution or any municipality, and neither the state nor any eligible post-secondary institution or municipality shall be liable for the bonds. The resolution or trust agreement may provide for registration of the bonds as to ownership and for successive conversion and reconversion from registered to bearer bonds and vice versa. The bonds may be registered in the office of the foundation. After the registration and delivery to the purchasers, the bonds are incontestable and constitute special obligations of the foundation, and the bonds and coupons are negotiable instruments under the laws of the state. The bonds may be sold at public or private sale by the foundation at prices and in accordance with procedures and terms it determines to be advantageous and reasonably obtainable. The foundation may provide for replacement of any bond that is mutilated or destroyed.