PetroBlock: A Blockchain-Based Payment Mechanism for Fueling Smart Vehicles. - Jamil, Faisal; Cheikhrouhou, Omar; Jamil, Harun; Koubaa, Anis; Derhab, Abdelouahid; Ferrag, Mohamed Amine; Lax, Gianluca; Tonelli, Roberto; Ortu, Marco; Pinna, Andrea (Applied Sciences (2076-3417), 2021)