Table 1.

Literature search framework and selection approach.

	Concept	Terms for searching within titles and abstracts	CAB Abstracts	Business source ultimate	Scopus	Proquest	Total number of articles found in the search
1	agribusiness	(“agri-business” OR “agro-business” OR “agribusiness” OR “agrobusiness")	Topic/Descriptor/[Title, Abstract]	All Fields [Topic/Title, Abstract]	Title-Abstract-Keywords TI-AB-KW	Anywhere [Title -Abstract-Keywords]
2	environmental market	(“environmental market” OR “eco-friendly market” OR “green market” OR “carbon market” OR “environmental label*" OR “carbon off-set” OR “standard certificate")	Topic/Descriptor/[Title, Abstract]	All Fields [Topic/Title, Abstract]	TI-AB-KW	Anywhere [TI/AB/SU]
Initial Results			281	37	23	2409	2750
Results after filtering using inclusion criteria			172	30	23	231	456