1. DECHEMA New natural resource base in the chemical industry-only a matter of time http://www.achema.de/fileadmin/user_upload/Bilder/Presse/ACHEMA2012/Trendberichte/Trendberichte_2012/tb19_en_Biobased_Chemicals.pdf
2. European Commission Regulation (EC) No. 1907/2006 of the European Parliament and of the Council http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CONSLEG:2006R1907:20130701:EN:PDF#page=241
3. Limonene: a versatile chemical of the bioeconomy;Ciriminna;Chem Commun,2014