IMMIGRATION - review of decision of Refugee Review Tribunal - factional fighting between clans in Somalia - applicant a member of the Ashraf clan in an area controlled by the Habr Gedir clan - allegation that Tribunal failed to refer to or deal with independent evidence in support of applicant's claim for refugee status - material not referred to by Tribunal not in fact supportive of applicant's claims - findings of Tribunal open on evidence before it - allegation that Tribunal failed to act "according to substantial justice and the merits of the case" - discussion of Eshetu v Minister for Immigration and Multicultural Affairs - alleged failure to accord "substantial justice" does not give rise to an available ground for review - Eshetu concerned only with procedural failures - allegation that Tribunal erred by requiring the applicant to demonstrate a course of systematic discrimination against the applicant - discussion of "systematic conduct" - no error of law - whether the Ashraf community are harassed to such a degree as to constitute persecution is a question of fact to be determined by the Tribunal - [1998] FCA 1077 - FCA 1998 case summary — Zoe