Literature cited
Z. V. Zhidkova, Zh. Prikl. Spektrosk.,16, No. 2, 325 (1972).
M. A. Mostoslavskii and M. M. Shapkina, Proceedings of a Conference on Problems of the Applications of Correlation Equations in Organic Chemistry [in Russian], Vol. 2, Tartu State University (1963).
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 22, No. 5, pp. 861–864, May, 1975.
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Zhidkova, Z.V. Photochromic properties of solutions and films colored with the dyes 2-perinaphthpenthiophene-2′-benzothiophene-indigo and 2-perinaphthpenthiophene-2′-(ethoxybenzothiophene)-indigo. J Appl Spectrosc 22, 652–654 (1975). https://doi.org/10.1007/BF00614876
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DOI: https://doi.org/10.1007/BF00614876