Engineering for rural development [elektronický zdroj] : 20th international scientific conference, proceedings, vol. 20, may 26-28, 2021, Jelgava / editors Larisa Malinovska, Vitalijs Osadcuks . Jelgava :  Latvia University of agriculture , 2021 . online (1853 s) . ISSN 1691-5976
http://tf.llu.lv/conference/proceedings2021/ .