___

• [1] J. Bertin, Resaux de Kummer et surfaces K3, Invent. Math. 93, 267-284 (1988).
• [2] H. Inose, On de ning equations of singular K3 surfaces and a notion of isogeny, in Proc. Int. Symp. Alg. Geo., Kyoto 1977, Kinokuniya Books (1978), 495-502.
• [3] H. Inose, On certain Kummer surfaces which can be realized as nonsingular quartic surfaces in P3, J. Fac. Sci. Univ. Tokyo Sect. IA Math. 23 No 3, 545-560 (1976).
• [4] T. Katsura, Generalized Kummer surfaces and their unirationality in characteristic p, J. Fac. Sci. Univ. Tokyo, Sect. IA, Math. 34, 1-41 (1987).
• [5] D. Morrison, On K3 surfaces with large Picard number, Inv. Math. 75, 105-121 (1984).
• [6] S. Mukai, On the moduli spaces of bundles on K3 surfaces I, in Vector Bundles in Algebraic Geometry, Tata Institute of Fundamental Research Studies 11, Oxford Uni. Press 1987, 341-413.
• [7] S. Mukai, Finite groups of automorphisms of K3 surfaces and the Mathieu group, Inv. Math. 94, 183-221,(1988).
• [8] T. Shioda, The period map of abelian surfaces, J. Fac. Sci. Uni. Tokyo, 25, 47-59 (1978).
• [9] T. Shioda, H. Inose, On singular K3 surfaces, in Complex Analysis and Algebraic Geometry, Iwanami Shoten (1977), 119-136.
• [10] T. Shioda, N. Mitani, Singular abelian surfaces and binary quadratic forms, in CLassi- cation of Algebraic Varieties and Compact Complex Manifolds, LNM No. 412, 259-287 (1974).
• [11] G. Xiao, Galois covers between K3 surfaces, Ann. Inst. Fourier, Grenoble 46, 73-88 (1996).