@article{23da15225687467fa3338a7888c9f16c,
title = "A goal programming model for the operation of closed-loop supply chains",
keywords = "Fundamental-objective hierarchy, Means-objectives network, Non-preemptive goal programming, Why-what's stopping (WWS) analysis",
author = "Aman Gupta and Evans, {Gerald W.}",
year = "2009",
month = aug,
doi = "10.1080/03052150902802242",
language = "English",
volume = "41",
pages = "713--735",
journal = "Engineering Optimization",
issn = "0305-215X",
publisher = "Taylor and Francis",
number = "8",
}