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Low-temperature excitonic, electron–hole and interstitial-vacancy processes in LiF single crystals, Nakonechnyi, S, Kärner, T, Lushchik, A, Lushchik, Ch, Babin, V, Feldbach, E, Kudryavtseva, I, Liblik, P, Pung, L, Vasil’chenko, E
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Nakonechnyi et al. (2005) studied this question.
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