Corrigendum to "On the classification of prime-power groups by coclass"
  A further step towards a possible classification of $p$-groups by coclass was made by Eick & Leedham-Green in 2007. They gave a constructive proof of the ultimate periodicity of shaved coclass graphs. By giving a counterexample we show that there is a mistake in their proof, and we fill this gap. 
Martin Couson
math.GR