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Table 1 Query’s String search in the databases of the structured systematic review

From: Theoretical background of innovation in services in small and medium-sized enterprises: literature mapping

Data base Query’s String Number of publications
Web of Science TS=(“service innovation” AND (“SME” OR “small and medium enterprise” OR “small and medium-sized enterprises”)) 32
SCOPUS TITLE-ABS-KEY(“service innovation” AND (“SME” OR “small and medium enterprise” OR “small and medium-sized enterprises”)) 89
Total 121