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Abstract
Forensic document examination has count four decades but is still new and beginning so the literatures are being collected to provide base for development. Documents are integral parts of our lives so it is important to check whether the papers of same brands are same or different under the impact of different light sources and how the paper is differentiated from each other within same brand or in different brands. Light sources help us to examine the authenticity of paper whether it is the same paper or substituted later to mislead the others.