Evolution of structure functions in momentum space Tuomas Lappi, Heikki Mäntysaari, Hannu Paukkunen and Mirja Tevio Eur. Phys. J. C, 84 1 (2024) 84 Published online: 25 January 2024 DOI: 10.1140/epjc/s10052-023-12365-2