A novel memristive time–delay chaotic system without equilibrium points V.-T. Pham, S. Vaidyanathan, C.K. Volos, S. Jafari, N.V. Kuznetsov and T.M. Hoang Eur. Phys. J. Special Topics, 225 1 (2016) 127-136 Published online: 29 February 2016 DOI: 10.1140/epjst/e2016-02625-8