1. SWF~-I. 1994. ISO 10303-1. Industrial automation systems and integration~oduct data representation and exchange~art 1: Overview and fundamental principles. SWF~-I. 1994. ISO 10303-1. Industrial automation systems and integration~oduct data representation and exchange~art 1: Overview and fundamental principles.
2. SWF~-ll. 1994. ISO 10303-1. Industrial automation systems and integration~oduct data representation and exchange~art 11: Descriptive methods: The EXPRESS language reference manual. SWF~-ll. 1994. ISO 10303-1. Industrial automation systems and integration~oduct data representation and exchange~art 11: Descriptive methods: The EXPRESS language reference manual.
3. SWF~-21. 1994. ISO 10303-1. Industrial automation systems and integration~oduct data representation and exchange~art 21: hnplementation methods: Clear text encoding of the exchange structure. SWF~-21. 1994. ISO 10303-1. Industrial automation systems and integration~oduct data representation and exchange~art 21: hnplementation methods: Clear text encoding of the exchange structure.
4. STEP-22. to appear. ISO 10303-1. Industrial automation systems and integration Product data representation and exchange~art 22: hnplementation methods: Standard data access interface. STEP-22. to appear. ISO 10303-1. Industrial automation systems and integration Product data representation and exchange~art 22: hnplementation methods: Standard data access interface.
5. SWF~-31. 1994. ISO 10303-1. Industrial automation systems and integration~oduct data representation and exchange~art 31: Conformance testing methodology and framework: General concepts. SWF~-31. 1994. ISO 10303-1. Industrial automation systems and integration~oduct data representation and exchange~art 31: Conformance testing methodology and framework: General concepts.