Pure Appl. Chem., 1993, Vol. 65, No. 1, pp. 157-163
http://dx.doi.org/10.1351/pac199365010157
Extended systems of closed helicene. Synthesis and characterization of [7] and [7.7]-circulene
First page:
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Pure Appl. Chem., 1993, Vol. 65, No. 1, pp. 157-163
http://dx.doi.org/10.1351/pac199365010157