Enhancing energy harvesting by coupling monostable oscillators Julián I. Peña Rosselló, Horacio S. Wio, Roberto R. Deza and Peter Hänggi Eur. Phys. J. B, 90 2 (2017) 34 Published online: 15 February 2017 DOI: 10.1140/epjb/e2017-70703-x