Zahra Pourali Majid Aminnayeri A Novel Discrete League Championship Algorithm for Minimizing Earliness/Tardiness Penalties with Distinct Due Dates and Batch Delivery Consideration. 139-146 2011 ICIC (1) http://dx.doi.org/10.1007/978-3-642-24728-6_19 conf/icic/2011-1 db/conf/icic/icic2011-1.html#PouraliA11