Figure 2
The flowchart given has a staircase diagram with four boxes, beginning at the top left and ending at the lower right. The flow begins with a box labeled “Stage 1: Database search.” The text inside reads: “Database: Web of Science, “Keywords: “green” and “asterisk washing,” Period: 1976 to 2025, Included: 3,116 articles.” From this box, a double-headed arrow rises and points to a box at the bottom right labeled “Stage 2: Scholarly filtration.” The text inside reads: “Article type: articles, proceedings papers, review articles, and early access documents. Included: 3,092 articles.” On the right side of this box, a label reads as follows: “24 articles excluded.” From “Stage 2,” a double-headed arrow leads to the next box labeled “Stage 3: Language filtration.” The text inside reads: “Language: English, Included: 3,004 articles.” On the right side of this box, a label reads as follows: “88 articles excluded.” From “Stage 3,” a double-headed arrow arises and points to the final box labeled “Bibliometric review.” The text inside reads: “Included: 3,004 articles.”Database refinement. Source: Authors’ processing