Indiana Code Title 5. State and Local Administration § 5-1.2-4-9

Sec. 9. The bonds shall be authorized by a resolution of the authority, shall bear the date or dates, and shall mature at a time or times as the resolution may provide, except that no bond shall mature more than fifty (50) years from the date of its issue.  The bonds shall be in denominations, be in the form, either coupon or registered, carry the conversion or registration privileges, be executed in the manner, be payable in the medium of payment at the place or places inside or outside Indiana, and be subject to the terms of redemption, including redemption prior to maturity, as the resolution or any trust agreement or indenture of the authority securing the bonds may provide.  The bonds shall bear interest at a rate or rates that may be fixed, variable, fixed convertible to variable, variable convertible to fixed, or any combination of these rates.  Variable rates shall be determined in the manner and in accordance with the provisions set forth in the resolution or the trust agreement or indenture securing the bonds.  The interest on the bonds may be payable at the time or times or at the interval or intervals as may be provided in the resolution or the trust agreement or indenture securing the bonds, including the compounding and payment of interest at maturity or at any other time or times as may be specified in the resolution, trust agreement, or indenture.  The bonds and their issuance shall not be subject to the provisions of any other statute concerning bonds or the issuance of bonds.  Bonds of the authority may be sold by the authority at public or private sale, and at a price or prices as the authority shall determine.  No action to contest the validity of any bonds issued or guarantees entered into by the authority under this article shall be commenced more than thirty (30) days following the adoption of the resolution approving such bonds or guarantees as provided in section 10 of this chapter.