A. J. . Olawale, F. W. . Ipeayeda, R. A. . Ganiyu, A. S. . Falohun, O. O. . Awodoye, and E. O. . Olawale, “Walrus Optimization-tuned Deep Belief Network for Credit Card Fraud Detection”, laujet, vol. 20, no. 1, pp. 181–193, May 2026.