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6 References
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Ugi, I., Stein, N., Knauer, M., Gruber, B., Bley, K., Weidinger, R. (1993). New elements in the representation of the logical structure of chemistry by qualitative mathematical models and corresponding data structures. In: Computer Chemistry. Topics in Current Chemistry, vol 166. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0111463
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