1. SISSA − Scuola Internazionale Superiore di Studi Avanzati, Via Bonomea, 265, I-34136 Trieste, Italy
2. CNR-NANO, Istituto Nanoscienze, Centro S3 via Campi 213A, I-41125 Modena, Italy
3. THEOS
− Theory and Simulation of Materials, Ecole Polytechnique Fédérale de Lausanne, Station 12, 1015 Lausanne, Switzerland