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[1]
M.Cavalli-sforza et al, Nucl. Instr. and Merh., 124(1975), 73.[2] Alessamdro Borgjhesi, Nucl Instr and meth. 153(1978).379.[3] R.L.Chase, Nucl. Instr. and Merh,113(1973).
M.Cavalli-sforza et al, Nucl. Instr. and Merh., 124(1975), 73.[2] Alessamdro Borgjhesi, Nucl Instr and meth. 153(1978).379.[3] R.L.Chase, Nucl. Instr. and Merh,113(1973).