Okla. Stat. tit. 62, § 762

The powers conferred by the General Obligation Public Securities Refunding Act are in addition to and supplemental to and are not in substitution for the powers conferred by any other law. Bonds may be issued pursuant to the provisions of the General Obligation Public Securities Refunding Act without regard to the provisions of any other law unless otherwise provided for in the General Obligation Public Securities Refunding Act, and if so issued, insofar as the provisions of the General Obligation Public Securities Refunding Act are inconsistent with the provisions of any other law, the provisions of the General Obligation Public Securities Refunding Act are controlling.