The Authority may provide for the issuance of revenue refunding bonds of the Authority for the purpose of refunding any obligations then outstanding which have been issued under the provisions of this article or by other state and local authorities or political subdivisions of the Commonwealth where such obligations are secured by a lease or other payment agreement with the Commonwealth, including the payment of any redemption premium thereon and any interest accrued or to accrue to the date of redemption of the obligations, and, if deemed advisable by the Authority, for the additional purpose of constructing improvements, extensions, or enlargements of the project in connection with which the obligations to be refunded have been issued. The Authority may provide by resolution for the issuance of its revenue obligations for the combined purpose of (i) refunding any obligations then outstanding that have been issued under the provisions of this article or by other state and local authorities or political subdivisions of the Commonwealth where such obligations are secured by a lease or other payment agreement with the Commonwealth, including the payment of any redemption premium thereon and any interest accrued or to accrue to the date of redemption of such obligations, and (ii) paying all or any part of the cost of any additional project or any portion thereof. The issuance of the bonds, the maturities and other details thereof, the rights of the holders thereof, and the rights, duties and obligations of the Authority shall be governed by the provisions of this article insofar as they may be applicable.