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‚PŽŸŒณ‹ญ‘ŠŠึ‹เ‘ฎ‚ฬ‰^“ฎ—ส•ช•z@์ใ‘ฅ—YA—ภฌ‹gAŒล‘ฬ•จ—26A109i1991j@

’ฉ‰i-Luttinger‰t‘ฬ‚ฬ‚P—ฑŽqƒXƒyƒNƒgƒ‹Šึ”@‚‹‚‹F@J. Voit, J. Phys. Cond. Mat. 5, 8305 (1993) 

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