@article{paperid:1015300, author = {Usefzadeh, Hamidreza and Tareghian, Hamed Reza and Farahi, Mohammad Hadi}, title = {Tri-directional Scheduling Scheme:Theory and Computation}, journal = {Journal of Mathematical Modelling and Algorithms}, year = {2010}, volume = {7}, number = {4}, month = {November}, issn = {1570-1166}, pages = {357--373}, numpages = {16}, keywords = {Project management; Scheduling schemes; Heuristic algorithms; Bidirectional scheduling scheme.}, }