ŠPAKOV, O.; MINIOTAS, D. Visualization of Eye Gaze Data using Heat Maps. Elektronika ir Elektrotechnika, [S. l.], v. 74, n. 2, p. 55–58, 2007. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/10372.. Acesso em: 8 feb. 2026.