%0 Journal Article %A Mihalik, Michael L. %T Bounded Depth Ascending HNN Extensions and $\unicode[STIX]{x1D70B}_{1}$-Semistability at infinity %J Canadian journal of mathematics %D 2020 %P 1529-1550 %V 72 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/S0008414X19000385/ %R 10.4153/S0008414X19000385 %F 10_4153_S0008414X19000385