nNNPDF3.0: evidence for a modified partonic structure in heavy nuclei Rabah Abdul Khalek, Rhorry Gauld, Tommaso Giani, Emanuele R. Nocera, Tanjona R. Rabemananjara and Juan Rojo Eur. Phys. J. C, 82 6 (2022) 507 Published online: 03 June 2022 DOI: 10.1140/epjc/s10052-022-10417-7