HOGAN, Vincent; MASSEY, Patrick; MASSEY, Shane. Competitive Balance and Match Attendance in European Rugby Union Leagues. The Economic and Social Review, [S. l.], v. 44, n. 4, Winter, p. 425–446, 2013. Disponível em: https://esr.ie/index.php/esr/article/view/89. Acesso em: 19 feb. 2026.