参考文献

Symrise AG; Koch, Oskar; Köckritz, Angela; Kant, Michael; Martin, Andreas; Schöning, Axel; Armbruster, Udo; Bartoszek, Michael; Evert, Sigrid; Lange, Brigitte; Bienert, Regina Patent: US2014/66666 A1, 2014 ; Location in patent: Paragraph 0268-0269 ;