G. Aad, E. Aakvaag, B. Abbott, K. Abeling, J. Cantero, O. ZaplatĂ­lek, B. Ali, K. Augsten, B. Bergmann, H. Day-Hall et al.: Measurements of Lund subjet multiplicities in 13 TeV proton-proton collisions with the ATLAS detector. Physics Letters B 859, 139090 (2024). doi:10.1016/j.physletb.2024.139090