Nonlinear amplification of adhesion forces in interleaved books Raphaelle Taub, Thomas Salez, Hector Alarcòn, Élie Raphaël, Christophe Poulard and Frédéric Restagno Eur. Phys. J. E, 44 5 (2021) 71 Published online: 28 May 2021 DOI: 10.1140/epje/s10189-021-00068-z