List of Articles Resource Constrained Open Access Article Abstract Page Full-Text 1 - The preemptive resource-constrained project scheduling problem subjectto due dates and preemption penalties: An integer programming approach Behrouz Afshar nadjafi Shahram Shadrokh Open Access Article Abstract Page Full-Text 2 - An Exact Algorithm for the Mode Identity Project Scheduling Problem Behrouz Afshar Nadjafi Amir Rahimi Hamid Karimi 20.1001.1.22519904.2012.5.10.7.3 Open Access Article Abstract Page Full-Text 3 - A Multi-Mode Resource-Constrained Optimization of Time-Cost Trade-off Problems in Project Scheduling Using a Genetic Algorithm Sedigheh Nader Abadi Emad Roghanian Hadi Aghassi