Detection of coupling between oscillators with analytic tests for significance Dmitry A. Smirnov, Elena V. Sidak and Boris P. Bezruchko Eur. Phys. J. Special Topics, 222 10 (2013) 2441-2451 Published online: 28 October 2013 DOI: 10.1140/epjst/e2013-02028-5