RADIĆ, Dejan. Uvodnik. Procesna tehnika, [S.l.], v. 31, n. 1, p. 4, july 2019. ISSN 2217-2319. Dostupno na: <https://izdanja.smeits.rs/index.php/procteh/article/view/4882>. Datum pristupa: 18 sep. 2020