Annals of Operations Research
Annals of Operations Research > 2012 > 197 > 1 > 159-190
Annals of Operations Research > 2012 > 201 > 1 > 423-440
Annals of Operations Research > 2012 > 197 > 1 > 159-190
Annals of Operations Research > 2012 > 201 > 1 > 423-440