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Lua i Stíl Chicago (17ú heag.)Graaf, Hendrik de. Charge and Spin Density in S-state Rare Earth Intermetallic Compounds. [S.l.: s.n.], 1982.
Lua MLA (8ú heag.)Graaf, Hendrik de. Charge and Spin Density in S-state Rare Earth Intermetallic Compounds. s.n.], 1982.
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