1. How genes paint flowers and seeds;J Mol;Trends Plant Sci,1998
2. Plant Pigments;TW Goodwin,1998
3. The genetics and biochemistry of floral pigments;E Grotewold;Annu Rev Plant Biol,2006
4. Gentians;F Kohlein,1991
5. Floricultural and Ornamental Biotechnology V;M Nishihara,2008