Retailer’s Optimal Procurement Strategy under Supply Disruption and Stochastic Demand: Backup Sourcing or Simultaneous Sourcing

Table 1

Literature reviews of backup (simultaneous) sourcing models under supply disruption.

Authors	Supply disruption	Demand	Backup sourcing		Simultaneous sourcing
			WPP	SRP
Hou et al. [1]	Partial	Det.			✓
Li [3]	Binomial	Det.	WPP-SR	✓	✓
Giri and Bardhan [5]	Binomial	Sto.	WPP-DR
Silbermayr and Minner [6]	Binomial	Det.			✓
Kumar et al. [9]	Binomial	Det.			✓
Zeng and Xia [10]	Partial	Sto.			✓
Tang et al. [12]	Binomial	Det.			✓
Yin and Wang [15]	Binomial	Det.	WPP-SR	✓
Hou et al. [16]	Binomial	Det.	WPP-SR
Qi [17]	Binomial	Det.	WPP-SR
Zhang and Wang [19]	Binomial	Sto.	WPP-DR
Yu et al. [18]	Binomial	Det.	WPP-SR		✓
Present paper	Partial	Sto.	WPP-DR, WPP-SR	✓	✓

Note. For convenience, let terms Det. and Sto. denote deterministic and stochastic, respectively.