@article{article3b6d7a37,
title   = {Mass dependence of directed collective flow},
author = {Huang, M J and Lemmon, R C and Daffin, F and Lynch, W G and Schwarz, C and Tsang, M B and Williams, C and Danielewicz, P and Haglin, K and Bauer, W and Carlin Filho, Nelson and Charity, R J},
year = {1996},
journal   = {Physical Review Letters}
}