Localization and coherent states in a quantum DNLS trimer Ricardo Martínez-Galicia and Panayotis Panayotaros Eur. Phys. J. Special Topics, 225 13-14 (2016) 2717-2727 Published online: 22 November 2016 DOI: 10.1140/epjst/e2015-50326-1