LAZOV, Lyubomir; TEIRUMNIEKS, Edmunds; TEIRUMNIEKA, Erika; CACIVKIN, Pavel; ANGELOV, Nikolay; KARADZHOV, Tsanko. LABORATORY EXERCISE TO DETERMINE CONTRAST IN LASER MARKING OF ARTICLES. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference, Rezekne, Latvia, v. 1, p. 331–339, 2019. DOI: 10.17770/sie2019vol1.3906. Disponível em: https://archive-journals.rtu.lv/sie/article/view/2001.. Acesso em: 11 mar. 2026.