A Proposal for Using Metadata Encoding Techniques for Health Care Information Indexing on the WWW. - Richard Appleyard; Gary Malet (AMIA, 1997)

Model Formulation: A Model for Enhancing Internet Medical Document Retrieval with "Medical Core Metadata". - Gary Malet; Felix Munoz; Richard Appleyard; William R. Hersh (J. Am. Medical Informatics Assoc., 1999)