GERULOVÁ, Kristína et al. The study of metalworking fluids biodegradability by indirect measurement of bacterial inoculum respiration. In Vedecké práce MtF STU v Bratislave so sídlom v Trnave. Research papers Faculty of Materials Science and Technology Slovak University of Technology in Trnava. Vol. 23, No. 36 (2015), s. 65-76. ISSN 1336-1589.