Chemical freeze-out of strange particles and possible root of strangeness suppression K. A. Bugaev, D. R. Oliinychenko, J. Cleymans, A. I. Ivanytskyi, I. N. Mishustin, E. G. Nikonov and V. V. Sagun EPL, 104 2 (2013) 22002 Published online: 20 November 2013 DOI: 10.1209/0295-5075/104/22002