article_metadata: Anh Duc Hoang Minh Binh Tu Thi Thao Ta Manh Hung Hoang
article_metadata: 10.1155/2021/8870541
article_metadata: J Anal Methods Chem
article_metadata: 2021 May 15;2021:8870541.
article_metadata: CC BY
article_metadata: https://pubmed.ncbi.nlm.nih.gov/34055448/
article_metadata: PMC8143886
article_metadata: 34055448
article_metadata: Combination of a Green and a Traditional Method for Estimating Relative and Absolute Ink Age: A Case Study of Ballpoint Pen Ink Dating in Vietnam
article_metadata: 2021