[1] GS1-128

[2] GS1 Application Identifiers (AIs)

[3] ISO/IEC 15417, Information Technology - Automatic Identification and Data Capture Techniques - Bar code Symbology Specification - Code 128, Code 128条码的规范

[4] GS1-128条码的规范是：Section 5.3: GS1-128 Symbology Specifications

[5] Free Online GS1-128 / EAN-128 Barcodes Generator