Abazov, V. M., Abbott, B., Acharya, B.S., Kupčo, A., Lokajíček, M. Up and down quark structure of the proton. Physical Review D. 2024, 110(9), L091101. ISSN 2470-0010. E-ISSN 2470-0029. Dostupné z: https://doi.org/10.1103/PhysRevD.110.L091101.