Crackling noise in paper peeling L. I. Salminen, J. M. Pulakka, J. Rosti, M. J. Alava and K. J. Niskanen Europhys. Lett., 73 1 (2006) 55-61 Published online: 30 November 2005 DOI: 10.1209/epl/i2005-10365-x