[1] UCUM: Unified Code for Units of Measure
https://ucum.org

[2] QUDT: Quantities, Units, Dimensions and Data Types Ontologies
https://qudt.org
https://github.com/qudt/qudt-public-repo

[3] UNECE: Recommendation N° 20, Codes for Units of Measure Used in International Trade
https://unece.org/trade/cefact/UNLOCODE-Download

[4] IEC CDD: IEC Common Data Dictionary
https://cdd.iec.ch/

[5] LATEX_SIUNITX: A comprehensive (si) units package
https://ctan.org/pkg/siunitx
https://www.texdev.net/

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