Manoel B. Campêlo Ricardo C. Corrêa Nelson Maculan Fábio Protti ILP Formulations for Scheduling Ordered Tasks on a Bounded Number of Processors. 166-169 2001 7 Electronic Notes in Discrete Mathematics http://dx.doi.org/10.1016/S1571-0653(04)00251-3 db/journals/endm/endm7.html#CampeloCMP01