(2008) categorized spines into mushroom, thin, and stubby; however, we shown previously that spine designs cover a wide continuum, and such groups are arbitrary (T?nnesen et al
(2008) categorized spines into mushroom, thin, and stubby; however, we shown previously that spine designs cover a wide continuum, and such groups are arbitrary (T?nnesen et al., 2014; Wijetunge et…