Energy–energy correlation in electron–positron annihilation at NNLL + NNLO accuracy Zoltán Tulipánt, Adam Kardos and Gábor Somogyi Eur. Phys. J. C, 77 11 (2017) 749 Published online: 07 November 2017 DOI: 10.1140/epjc/s10052-017-5320-9