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Olsen Acta Chemica Scandinavica (1947-1973), 1951 , vol. 5, p. 1326,1334 Full Text Show Details Olsen et al. Acta Chemica Scandinavica (1947-1973), 1952 , vol. 6, p. 859,864 Acta Chemica Scandinavica (1947-1973), 1952 , vol. 6, p. 641,643