1. Naturally occurring quinones—VI. Spinochrome D;Anderson;J. Chem. Soc.,1965
2. Naturally occurring quinones—VII. Synthesis of spinochrome E;Anderson;J. Chem. Soc.,1966
3. Quinones—VII. New routes to 2-hydroxy-1,4-naphthaquinones;Baillie;J. Chem. Soc. (C),1966
4. Isolation of crystalline echinochrome;Ball;Biol. Bull., Woods Hole,1934
5. Echinochrome, its isolation and composition;Ball;J. biol. Chem.,1936