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3. Frans Fokkenrood . [n. d.] RegelSpraak for business rules: experiences in building a business rules compiler for the dutch tax administration: features: business rules community / business rules journal . Business Rules Community - BRC. Retrieved Mar. 28, 2022 from https://www.brcommunity.com/articles.php?id=b622. Frans Fokkenrood. [n. d.] RegelSpraak for business rules: experiences in building a business rules compiler for the dutch tax administration: features: business rules community / business rules journal. Business Rules Community - BRC. Retrieved Mar. 28, 2022 from https://www.brcommunity.com/articles.php?id=b622.
4. On legal contracts, imperative and declarative smart contracts, and blockchain systems
5. H.L.A. ( Herbert Lionel Adolphus) Hart and Penelope A . Bulloch . 1994 . The concept of law. ( 2 nd ed. ed.). Clarendon law series. Section : XII, p. 315; 23 cm. Clarendon Press , Oxford. isbn: 0-19-876122-8. http://catdir.loc.gov/catdir/enhancements/fy0640/94221592-d.html. H.L.A. (Herbert Lionel Adolphus) Hart and Penelope A. Bulloch. 1994. The concept of law. (2nd ed. ed.). Clarendon law series. Section: XII, p. 315; 23 cm. Clarendon Press, Oxford. isbn: 0-19-876122-8. http://catdir.loc.gov/catdir/enhancements/fy0640/94221592-d.html.