Features References
Shortages [66, 99, 138, 146, 151, 152, 166, 172, 173, 177, 203, 229, 241, 242, 250, 257, 278, 322]
Delay in payments [115, 126, 138, 146, 152, 180, 204, 230, 237, 250, 257]
Price decision [230, 235, 250, 257]
Multi-echelon [198, 229, 237, 242, 327]
Multiple-items [99, 244]
Fuzzy environments [230]