A Blockchain-Based Emergency Message Transmission Protocol for Cooperative VANET. - Mohiuddin Ahmed; Nour Moustafa; A. F. M. Suaib Akhter; Imran Razzak; Ehsanuzzaman Surid; Adnan Anwar; A. F. M. Shahen Shah; Ahmet Zengin (IEEE Trans. Intell. Transp. Syst., 2022)