M. . Bibak and G. H. Rezaeezadeh, “Characterization by order and degree pattern of the simple groups $O^{-}_{8}(q)$ for certain $q$”, Ukr. Mat. Zhurn., vol. 74, no. 6, pp. 743–751, Jul. 2022, doi: 10.37863/umzh.v74i6.2357.