Chimera states in complex networks: interplay of fractal topology and delay Jakub Sawicki, Iryna Omelchenko, Anna Zakharova and Eckehard Schöll Eur. Phys. J. Special Topics, 226 9 (2017) 1883-1892 Published online: 21 June 2017 DOI: 10.1140/epjst/e2017-70036-8