Extended Gaussian ensemble or q-statistics in hadronic production processes? T. Osada, O. V. Utyuzh, G. Wilk and Z. Wodarczyk Eur. Phys. J. B, 50 1-2 (2006) 7-10 Published online: 12 April 2006 DOI: 10.1140/epjb/e2006-00105-2