Order Scheduling Models: Hardness and Algorithms.

Naveen Garg Amit Kumar Vinayaka Pandit Order Scheduling Models: Hardness and Algorithms. 96-107 2007 conf/fsttcs/2007 FSTTCS http://dx.doi.org/10.1007/978-3-540-77050-3_8 db/conf/fsttcs/fsttcs2007.html#GargKP07