16 Soldal and Modahl (2019): Environmental analysis of competing products for lignin from Borregaard OR 39.19, Ostfold research
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18 Norsus: AR 09.21 Memo_starch adhesive with and without Exilva
19 Europe Chemicals Agency (ECHA) (2021). Substance information, Substance Infocard, Sodium tetraborate ecahydrate, Borax. https://echa.europa.eu/substance-information/-/substanceinfo/100.129.152
20 Baxter and Brekke (2016): Competitor product environmental analysis for Borregaard’s products, AR.06.16, Fredrikstad: Ostfold Research