Okla. Stat. tit. 70, § 70-23-121: Authority is authorized to issue refunding bonds

The Authority is hereby authorized to provide by resolution for

the issuance of revenue refunding bonds of the Authority for the

purpose of refunding any bonds then outstanding which shall have

been issued under the provisions of this article, including the

payment of any redemption premium thereon and any interest accrued

or to accrue to the date of redemption of such bonds. Each refunding

issue shall be limited to the project in connection with which the

bonds being refunded were issued, and revenues pledged to pay any

such refunding issue shall be limited to the revenue derived from

said separate project. The issuance of such bonds, the maturities

and other details thereof, the rights of the holders thereof, and

the rights, duties and obligations of the Authority in respect of

the same shall be governed by the provisions of this article insofar

as the same may be applicable.