Centeno, Silvia A., Virginia Lladó Buisan, and Polonca Ropret. "Raman Study of Synthetic Organic Pigments and Dyes in Early Lithographic Inks (1890-1920)." Journal of Raman Spectroscopy 37 (2006): 1111-1118.

Centeno, Silvia A., Virginia Lladó Buisan, and Polonca Ropret. "Raman Study of Synthetic Organic Pigments and Dyes in Early Lithographic Inks (1890-1920)." Journal of Raman Spectroscopy 37 (2006): 1111-1118.