A novel chaotic system without equilibrium: Dynamics, synchronization, and circuit realization - Azar, A.T.; Volos, C.; Gerodimos, N.A.; Tombras, G.S.; Pham, V.-T.; Radwan, A.G.; Vaidyanathan, S.; Ouannas, A.; Munoz-Pacheco, J.M. (Complexity, 2017)