1. Der Ionenaustauscher bei Torfmoosen (Sphagnum);Anschütz I.;Flora,1954
2. Moss Pigments. I. The Anthocyanins of Bryum cryophilum O. Mårt.
3. Moss pigments: III;Bendz G.;Arkiv Kemi,1965
4. Cohen 1934:Council for Scientific and Industrial Research (Australia) Pamphlet Nr.51.
5. Cohen 1936:Council for Scientific and Industrial Research (Australia) Pamphlet Nr.62.