HGML: a hypertext guideline markup language. - C. Greg Hagerty; David S. Pickens; Casimir A. Kulikowski; Frank A. Sonnenberg (AMIA, 2000)

Vocabulary Requirements for Implementing Clinical Guidelines in an Electronic Medical Record: A Case Study. - Frank A. Sonnenberg; C. Greg Hagerty; Janaki Acharya; David S. Pickens; Casimir A. Kulikowski (AMIA, 2005)

Prediction in Annotation Based Guideline Encoding. - C. Greg Hagerty; David S. Pickens; Jaime Chang; Casimir A. Kulikowski; Frank A. Sonnenberg (AMIA, 2006)