Standardized Terminology for Clinical Trial Protocols Based on Top-Level Ontological Categories. - Barbara Heller; Heinrich Herre; Kristin Lippoldt; Markus Löffler (CGP, 2004)

Domain-Specific Concepts and Ontological Reduction within a Data Dictionary Framework. - Barbara Heller; Heinrich Herre; Kristin Lippoldt (DILS, 2004)

The Theory of Top-Level Ontological Mappings and Its Application to Clinical Trial Protocols. - Barbara Heller; Heinrich Herre; Kristin Lippoldt (EKAW, 2004)