INOPTEP 2019 : sixth international conference sustainable postharvest and food technologies and XXXI national conference processing and energy in agriculture PTEP 2019, April 07th - 12th, 2019, Kladovo, Serbia = šesta međunarodna konferencja održive posleubirajuče i prehrambene technologije INOPTEP 2019 i XXXI nacionalna konferencija procesna tehnika i energetika u poljoprivredi PTEP 2019 [elektronický zdroj] : / editori Mirko Babič, Milivoj Radojčin PTEP 2019 . Novi Sad :  National society of processing in agriculture , 2019 . 1 CD-ROM [360 s] . ISBN 978-86-7520-458-9 .