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Lua i Stíl Chicago (17ú heag.)Vorobyev А. А. Alexander Akimovich, Arefyev K. P. Konstantin Petrovich, agus Vorobiev S. A. Evidence for a Positron-exciton Insulator in Alkali-halide Crystals. 1976, 1976.
Lua MLA (9ú heag.)Vorobyev А. А. Alexander Akimovich, et al. Evidence for a Positron-exciton Insulator in Alkali-halide Crystals. 1976, 1976.
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