@article{Stegeman:2022Ij, author = "Stegeman, Roy and Carrazza, Stefano and Cruz-Martinez, Juan", title = "{Small $x$ extrapolation for parton distributions}", doi = "10.22323/1.398.0371", journal = "PoS", year = 2022, volume = "EPS-HEP2021", pages = "371" }