@article{paperid:1023706,
author = {Ranjbar, Mohammad},
title = {An Optimal NPV Project Scheduling with Fixed Work Content and Payment on Milestones},
journal = {International Journal of Industrial Engineering and Production Research},
year = {2011},
volume = {22},
number = {3},
month = {September},
issn = {2008-4889},
pages = {189--194},
			numpages = {5},
keywords = {Project scheduling; Net present value},
}