Robuta

https://www.law.cornell.edu/regulations/hawaii/title-6/division-financial-administration-division/chapter-16
early childhood educationspecial purposerevenue bondschapter
https://www.irs.gov/es/tax-exempt-bonds/tax-credit-bonds
General information on tax credit and specified tax credit bonds
internal revenue servicetax creditbonds
https://www.irs.gov/irm/part7/irm_07-002-003
tax exemptbondsvoluntaryclosingagreement