KUČERA, Marián et al. Effect of contaminants on the lifetime of hydraulic biooils and systems. In Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis. ISSN 1211-8516, 2017, vol. 65, no. 4, s. 1205-1212. VEGA 1/0676/14. SCOPUS.