SOMBUT, V. .; OHAMA, P. .; KUMPUN, S. .; KULNIDES, N. .; YINGYONGNARONGKUL, B.- ek . Separation of Blue Ballpoint Pen Inks- A Comparison of Solvent Systems on Thin Layer Chromatography Techniques. Suan Sunandha Science and Technology Journal, Bangkok, Thailand, v. 5, n. 1, p. 20–27, 2022. Disponível em: https://li02.tci-thaijo.org/index.php/ssstj/article/view/331. Acesso em: 3 may. 2024.