(1) Public obligations may be issued as certificated or uncertificated public obligations as provided in this part, notwithstanding provisions of law providing for issuance in other forms. Whenever bonds are issued under this part, the provisions of this part are alternative and supplemental to such other provisions.
(2) Nothing in this part limits or prevents the issuance of obligations in any other form or manner authorized by law.
(3) The provisions of this part may be applied to obligations that have previously been approved by vote, referendum, or hearing, authorizing or permitting the authorization of obligations in bearer and registered form or in bearer form only, and such obligations need not be resubmitted for a further vote, referendum, or hearing for the purpose of authorizing or permitting the authorization of obligations in registered form only.