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In [H.-G. Carstens, T. Dinski, E. Steffen, Reduction of symmetric configurations n3, Discrete Appl. Math. 99 (2000) 401–411] the authors claim that there exist a finite number of reductions such that every connected bicubic graph with girth ⩾6 different from the Fano–Heawood graph F can be reduced to a smaller of the same kind, having two vertices less, and by iteration to F. In this note, we define...
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