Elastic contact mechanics: Percolation of the contact area and fluid squeeze-outB. N. J. Persson, N. Prodanov, B. A. Krick, N. Rodriguez, N. Mulakaluri, W. G. Sawyer and P. MangiagalliEur. Phys. J. E, 35 1 (2012) 5DOI: https://doi.org/10.1140/epje/i2012-12005-2