Lazov L, Teirumnieks E, Teirumnieka E, Cacivkin P, Angelov N, Karadzhov T. LABORATORY EXERCISE TO DETERMINE CONTRAST IN LASER MARKING OF ARTICLES. SIE [Internet]. 2019 May 21 [cited 2026 Mar. 11];1:331-9. Available from: https://archive-journals.rtu.lv/sie/article/view/2001