@Article{CreGamNicPenUng07,
author = {P. Crescenzi and G. Gambosi and G. Nicosia and P. Penna and W. Unger},
title = {On-line load balancing made simple: Greedy strikes back},
journal = {Journal of Discrete Algorithms},
year = {2007},
volume = {5},
pages = {162-175}
}