Begum, M. S., and N. Padmaja. “ECG-HO-Net: A Hybrid Deep Learning Framework for Automated Arrhythmia Detection Using Hippopotamus Optimization and Liquid Neural Networks”. Engineering, Technology & Applied Science Research, vol. 15, no. 5, Oct. 2025, pp. 27141-9, doi:10.48084/etasr.11464.