NRS 244A.759

No action may be brought questioning the legality of any contract, lease, agreement, indenture, mortgage, resolution proceedings or bonds executed, adopted or taken in connection with any project or improvements authorized by NRS 244A.669 to 244A.763, inclusive, after 30 days from the effective date of that contract, lease, agreement, indenture, or mortgage or the resolution first authorizing the issuance of those bonds, as the case may be.