Erratum to “Reduction of symmetric configurations image” [Discrete Appl. Math. 99 (1–3) (2000) 401 –411]

In [H.-G. Carstens, T. Dinski, E. Steffen, Reduction of symmetric configurations image, 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 image different from the Fano–Heawood graph image can be reduced to a smaller of the same kind, having two vertices less, and by iteration to image. In this note, we define an additional necessary reduction, which is not listed in [H.-G. Carstens, T. Dinski, E. Steffen, Reduction of symmetric configurations image, Discrete Appl. Math. 99 (2000) 401–411].