Annals of Operations Research
Annals of Operations Research > 2012 > 193 > 1 > 273-289
Annals of Operations Research > 2012 > 196 > 1 > 361-369
Annals of Operations Research > 2012 > 193 > 1 > 273-289
Annals of Operations Research > 2012 > 196 > 1 > 361-369