//-->
Minimizing makespan subject to minimum total flow-time on identical parallel machines
Gupta, J.N.D., (2000)
A comprehensive analysis of group scheduling heuristics in a job shop cell.
Ruben, R.A., (1993)
Minimizing maximum tardiness and number of tardy jobs on parallel machines subject to minimum flow-time
Gupta, J.N.D., (2003)