%0 Journal Article
%A Rune Haugseng
%A Fabian Hebestreit
%A Sil Linskens
%A Joost Nuiten
%T Two-variable fibrations, factorisation systems and $\infty $-categories of spans
%J Forum of Mathematics, Sigma
%D 2023
%V 11
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.1017/fms.2023.107/
%R 10.1017/fms.2023.107
%G en
%F 10_1017_fms_2023_107