You seem to be attempting to access an item that has been removed from the repository.
The item you are trying to access was a duplicate of:
Brueggemann, Tobias and Hurink, Johann L. and Kern, Walter (2006) Quality of Move-optimal Schedules for Minimizing Total Weigted Completion Time. Operations Research Letters, 34 (5). pp. 583-590. ISSN 0167-6377