Overscreening in a 1D lattice Coulomb gas model of ionic liquids V. Démery, D. S. Dean, T. C. Hammant, R. R. Horgan and R. Podgornik EPL, 97 2 (2012) 28004 Published online: 04 January 2012 DOI: 10.1209/0295-5075/97/28004