S. A. Balogun, O. M. Ijiga, N. Okika, L. A. Enyejo, and O. J. Agbo, “A Technical Survey of Fine-Grained Temporal Access Control Models in SQL Databases for HIPAA-Compliant Healthcare Information Systems”, IJSRMT, vol. 4, no. 3, pp. 94–108, Mar. 2025.