Does sex induce a phase transition? P. M.C. de Oliveira, S. Moss de Oliveira, D. Stauffer, S. Cebrat and A. Pękalski Eur. Phys. J. B, 63 2 (2008) 245-254 Published online: 20 June 2008 DOI: 10.1140/epjb/e2008-00229-3