Evidence of quasi-partonic higher-twist effects in deep inelastic scattering at HERA at moderate Leszek Motyka, Mariusz Sadzikowski, Wojciech Słomiński and Katarzyna Wichmann Eur. Phys. J. C, 78 1 (2018) 80 Published online: 29 January 2018 DOI: 10.1140/epjc/s10052-018-5548-z