A Simple, Maintainable System for Identifying Subsets of a Modern Controlled Vocabulary. - Erich B. Schulz; James W. Barrett; Alasdair R. Maclean; Philip J. B. Brown (AMIA, 1997)

Semantic quality through semantic definition: refining the Read Codes through internal consistency. - Erich B. Schulz; James W. Barrett; Colin Price (AMIA, 1997)

Application of Technology: Read Code Quality Assurance: From Simple Syntax to Semantic Stability. - Erich B. Schulz; James W. Barrett; Colin Price (J. Am. Medical Informatics Assoc., 1998)

Mapping between SNOMED RT and Clinical terms version 3: a key component of the SNOMED CT development process. - Amy Y. Wang; James W. Barrett; Timothy E. Bentley; David Markwell; Colin Price; Kent A. Spackman; Michael Q. Stearns (AMIA, 2001)