analyses of some pigments found in fragments, many dyes and pigments have been identified and the technique clarified
A scientific and Archivistic investigation on Italian scagliola altar frontals / Baraldi, Pietro; Cannalire, L.; Colombini, M. P.. - STAMPA. - 1:(2005), pp. 1-1. (Intervento presentato al convegno International conference on Raman Spectroscopy tenutosi a Parigi nel 31/ 8- 3/9/ 2005 Paris).