%0 Journal Article %A Rune Haugseng %A David Gepner %A Thomas Nikolaus %T Lax Colimits and Free Fibrations in $\infty$-Categories %J Documenta mathematica %D 2017 %P 1225-1266 %V 22 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/593/ %R 10.4171/dm/593 %F 10_4171_dm_593