@article{articleec349e6d,
title   = {Discrete time evolution and energy nonconservation in noncommutative physics},
author = {Balachandran, Aiyalam P and Martins, Andrey Gomes and Teotonio Sobrinho, Paulo},
year = {2007},
doi = {10.1088/1126-6708/2007/05/066},
journal   = {Journal of High Energy Physics}
}