%0 Journal Article %A Gaƫtan Chenevier %T Subgroups of $\mathrm{Spin}(7)$ or $\mathrm{SO}(7)$ with Each Element Conjugate to Some Element of $\mathrm{G}_2$ and Applications to Automorphic Forms %J Documenta mathematica %D 2019 %P 95-161 %V 24 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/676/ %R 10.4171/dm/676 %F 10_4171_dm_676