Reconciling users' needs and formal requirements: issues in developing a reusable ontology for medicine. - Alan L. Rector; Pieter E. Zanstra; W. D. Solomon; Jeremy Rogers; Robert H. Baud; Werner Ceusters; A. M. W. Claassen; J. Kirby; Jean Marie Rodrigues; Angelo Rossi Mori; Egbert J. van der Haring; Judith C. Wagner (IEEE Trans. Inf. Technol. Biomed., 1998)