SINKEVICIUS, S.; LIPNICKAS, A.; RIMKUS, K. Amber Gemstones Sorting By Colour. Elektronika ir Elektrotechnika, [S. l.], v. 23, n. 2, p. 10-14, 2017. DOI: 10.5755/j01.eie.23.2.17993. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/17993. Acesso em: 20 apr. 2024.