Blockchain-enabled IoT framework with energy-efficient machine learning for scalable and secure smart cities. - Venkata Ramana Gupta Nallagattla; Amrita Rai; S. Thangam; G. Joel Sunny Deol; Abburi Srirama Kanaka Ratnam; J. Nageswara Rao; A. Santhi Mary Antony; K. Balasubramanian; Shamimul Qamar (Sustain. Comput. Informatics Syst., 2025)