Neb. Rev. Stat. § 31-337: Neb. Rev. Stat. § 31-337

The maturity of all bonds shall be fixed on July 1 of the year in which they mature and shall contain a recital that the same were issued in accordance with the provisions of sections 31-336 to 31-348 , and that they are to be paid out of a sinking fund to be created as provided in section 31-351 .