Deveoglu, O., E. Torgan, and R. Karadag. 2010. “Identification of Dyestuffs in the Natural Pigments Produced With Al3+, Fe2+ and Sn2+ Mordant Metals from Cochineal (Dactylopius Coccus Costa) and Walloon Oak (Quercus Ithaburensis Decaisne) by HPLC-DAD”. Asian Journal of Chemistry 22 (9):7021-30. https://asianpubs.org/index.php/ajchem/article/view/11943.