[1] ISO 10303-21, Industrial automation systems and integration — Product data representation and exchange — Part 21: Implementation methods: Clear text encoding of the exchange structure

[2] ISO 10303-22, Industrial automation systems and integration — Product data representation and exchange — Part 22: Implementation methods: Standard data access interface

[3] ISO 10303-42, Industrial automation systems and integration — Product data representation and exchange — Part 42: Integrated generic resource: Geometric and topological representation

[4] ISO 10303-45, Industrial automation systems and integration — Product data representation and exchange — Part 45: Integrated generic resource: Materials and other engineering properties

[5] ISO 10303-46, Industrial automation systems and integration — Product data representation and exchange — Part 46: Integrated generic resource: Visual presentation

[6] ISO 10303-47, Industrial automation systems and integration — Product data representation and exchange — Part 47: Integrated generic resource: Shape variation tolerances

[7] ISO 10303-101, Industrial automation systems and integration — Product data representation and exchange — Part 101: Integrated application resource: Draughting

[8] ISO/TS 10303-1667, Industrial automation systems and integration — Product data representation and exchange — Part 1667: Application module: Extended basic geometry

[9] ISO/IEC 8824-1, Information technology — Abstract Syntax Notation One (ASN.1) — Part 1: Specification of basic notation

[10] ISO/IEC 10646, Information technology — Universal Coded Character Set (UCS)

[11] GELLERT, W; GOTTWALD, S; et al., The VNR concise encyclopaedia of mathematics , 2nd Edition. New York: VEB Bibliographisches Institut Leipzig, 1989.

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