BSHR-FA: A Blockchain-Enabled Secure Hierarchical Routing Using Firefly Algorithm for VANETs. - C. Suganthi Evangeline; Vinoth Babu Kumaravelu; Arthi Murugadass; Agbotiname Lucky Imoize; Poongundran Selvaprabhu; J. Naskath (Secur. Priv., 2025)