Table S6. Search record by source for the systematic review "Recycled Glass as Secondary Raw Material: A Value Retention Hierarchy for Cross-Sectoral Material Flow Analysis"

Record of the literature searches for the PRISMA 2020 systematic review (item 7, search strategy): sources searched, search terms, records identified per source, and a controlled repetition of the four original search terms run on 30 September 2026, reported with field searched, date and count per term and source. The literal Boolean strings of the original search (June 2025) were not retained. The review protocol is deposited separately and is unchanged.