Green Supplier Selection Using Fuzzy Multiple-Criteria Decision-Making Methods and Artificial Neural Networks

Table 2

Frequency of the most important green criteria.

	Govindan et al.	Nielsen et al.
Duration	1996–2011	1996–2014
Number of reviewed papers	33	57
Criterion
Environmental management system	11	20
Green image	4	8
Environmental competences	3	6
Design for environment	3	5
Environmental improvement costs	2	5
Environmental performance	3	5