Classification of ballpoint pen inks based on selective extraction and subsequent digital color and cluster analyses.

Autor: Kalinichev AV; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia. i.i.tumkin@spbu.ru., Kravchenko AV; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia. i.i.tumkin@spbu.ru., Gryazev IP; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia. i.i.tumkin@spbu.ru., Kechin AA; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia. i.i.tumkin@spbu.ru., Karpukhin OR; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia. i.i.tumkin@spbu.ru., Khairullina EM; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia. i.i.tumkin@spbu.ru., Kartsova LA; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia. i.i.tumkin@spbu.ru., Golovkina AG; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia. i.i.tumkin@spbu.ru., Kozynchenko VA; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia. i.i.tumkin@spbu.ru., Peshkova MA; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia. i.i.tumkin@spbu.ru., Tumkin II; Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia. i.i.tumkin@spbu.ru.

Publikováno v: The Analyst [Analyst] 2022 Jun 27; Vol. 147 (13), pp. 3055-3064. Date of Electronic Publication: 2022 Jun 27.