He emphasised the boundaries for human identity by adopting the social interaction model of Fredrik Barth and argues that 'groups tend to define themselves not by reference to their own characteristics but by exclusion, that is, by comparison to "strangers"'.
Barth | Barth, Germany | Karl Barth | John Barth | Mario Barth | Fredrik Henrik af Chapman | Fredrik Erixon | Fredrik Georg Gade | Fredrik Bergh | Mario Barth (Comedian) | Kaspar von Barth | Georg Fredrik Rieber-Mohn | Fredrik Monsen | Fredrik Larsson | Fredrik Georg Gade (business) | Fredrik Fasting Torgersen | Fredrik Eklund | Fredrik Blom | Uta Barth | The October 2005 issue of ''Scanorama'' with Fredrik Eklund | Heinz Barth | Heinrich Barth | Hans Fredrik Grøvan | Fredrik Wallumrød | Fredrik von Otter | Fredrik Thordendal | Fredrik Ström | Fredrik Skavlan | Fredrik Petersen | Fredrik Pacius |