OKARMA, K.; LECH, P. Fast Statistical Image Binarization of Colour Images for the Recognition of the QR Codes. Elektronika ir Elektrotechnika, [S. l.], v. 21, n. 3, p. 58-61, 2015. DOI: 10.5755/j01.eee.21.3.10397. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/10397. Acesso em: 26 sep. 2022.