Statistically Analyzing RGB Histograms to Remove Highlighting in Aged Paper Monochromatic Documents. - Ricardo da Silva Barboza; Rafael Dueire Lins; Diego de A. Barros; Edson da F. de Lira (GREC, 2011)

Later Added Strokes or Text - Fraud Detection in Documents Written with Ballpoint Pens. - Ricardo da Silva Barboza; Rafael Dueire Lins; Edson da F. de Lira; Antonio Carlos A. Camara (ICFHR, 2014)