@article{articlebe31045a,
title   = {Comparison between classification using impact parameter and using number of participants in relativistic nuclear collisions},
author = {Aguiar, C E and Andrade, R and Grassi, Frederique Marie Brigitte Sylvie and Hama, Yogiro and Kodama, T and Osada, T and Socolowski Júnior, O},
year = {2004},
doi = {10.1590/s0103-97332004000200040},
journal   = {Brazilian Journal of Physics}
}