Multiple scroll wave chimera states Volodymyr Maistrenko, Oleksandr Sudakov, Oleksiy Osiv and Yuri Maistrenko Eur. Phys. J. Special Topics, 226 9 (2017) 1867-1881 Published online: 21 June 2017 DOI: 10.1140/epjst/e2017-70007-1