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Bloesh, Urs, Bosshard, Andreas, Schachenmann, Peter, Schachenmann, Hanta Rabetaliana, Klötzli, Frank 2002 Biodiversity of the subalpine forest-grassland ecotone of the Andringitra Massif, Madagascar. In: Mountain biodiversity : a global assesment. The Parthenon publishing group, Londres: 165-176.