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♦ 1Contribution to the study of the diet of four owl species (Aves, Strigiformes) from mainland and island areas of Greece, Haralambos Alivizatos, Vassilis Goutner and Stamatis Zogaris, Belg. J. Zool., 135 (2) : 109-118
♦ 2Ecology of Commanster♦ 3Microtus californicus (Rodentia: Cricetidae), NICHOLE L. CUDWORTH AND JOHN L. KOPROWSKI, MAMMALIAN SPECIES 42(868):230–243 (2010)
♦ 4Thomomys townsendii, B. J. Verts and Leslie N. Carraway, MAMMALIAN SPECIES No. 719, pp. 16 (2003)
♦ 5Microtus montanus, Wendy E. Sera and Cathleen N. Early, MAMMALIAN SPECIES No. 716, pp. 110 (2003)