Dijet production in diffractive deep-inelastic scattering in next-to-next-to-leading order QCD D. Britzger, J. Currie, T. Gehrmann, A. Huss, J. Niehues and R. Žlebčík Eur. Phys. J. C, 78 7 (2018) 538 Published online: 30 June 2018 DOI: 10.1140/epjc/s10052-018-5981-z