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Acta Chemica Scandinavica (1947-1973), 1948 , vol. 2, p. 109,113
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Clauson-Kaas; Fakstorp
Acta Chemica Scandinavica (1947-1973), 1947 , vol. 1, p. 213,218, 419
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Clauson-Kaas
Danske Vid. Selsk. Mat. fys. Medd.Chem.Abstr., 1947 , vol. 24, # 6 p. 18
Danske Vid. Selsk. Mat. fys. Medd.Chem.Abstr., 1948 , p. 1930