[ASSAFF, Y. - NEGRILL, V. J. - THEISSE, H. - MURRENHOFF, H. 2014. Analysis of the influence of contaminants on the biodegradability characteristics and ageing of biodegradable hydraulic fluids. In Journal of Mechanical Engineering, vol. 60, no. 6, pp. 417-424.]Search in Google Scholar
[CASEY, B. 2011. Defining and Maintaining Fluid Cleanliness for Maximum Hydraulic Component Life. Available online at: http:// www.plant-maintenance.com/articles/hydraulic_fluid_cleanliness.pdf [Accessed: 11-01-2017]]Search in Google Scholar
[HAAS, P. - KADNAR, M. - TOTH, F. - RUSNAK, J. - NOGLI, D. 2016. Influence of bellows setting on its spring rate and on temperature adjustment of electromechanical thermostats. In Acta Technologica Agriculturae, vol. 19, no. 2, pp. 43-48.]Search in Google Scholar
[HUJO, Ľ. - TKAČ, Z. - TULIK, J. - HAJDAK, V. 2013. Design of laboratory test device for evaluating the lifetime of hydraulic components of tractor three-point hitch. In Advanced Materials Research, vol. 801, special iss., pp. 137-142.]Search in Google Scholar
[HOFFMANN, D. - HEŘMANEK, P. - RYBKA, A. - HONZIK, I. 2013. Design a drive for interaxle mechanical cutter used in low trellises. In Agronomy Research, vol. 11, no. 1, pp. 39-46.]Search in Google Scholar
[HLAVAČ, P. - BOŽIKOVA, M. - CVIKLOVIČ, V. 2016. Dynamic viscosity and activation energy of wort during fermentation and storing. In Acta Technologica Agriculturae, vol. 19, no. 1, pp. 6-9.]Search in Google Scholar
[KOSIBA, J. - ČORŇAK, Š. - GLOS, J. - JABLONICKY, J. - VOZAROVA, V. - PETROVIĆ, A. - CSILLAG, J. 2016. Monitoring oil degradation during operating test. In Agronomy Research, vol. 14, no. 5, pp. 1626-1634.]Search in Google Scholar
[KUČERA M. - ROUSEK M. 2008. Evaluation of thermooxidation stability of biodegradable recycled rapeseed-based oil NAPRO-HO. In Research in Agricultural Engineering, vol. 54, no. 4 pp. 163-169.]Search in Google Scholar
[KUČERA, M. - ALEŠ, Z. - PEXA, M. 2016. Detection and characterization of wear particles of universal tractor oil using a particles size analyser. In Agronomy Research, vol. 14, no. 4, pp. 1351-1360.]Search in Google Scholar
[KUČERA, M. - ALEŠ, Z. - IVANDIĆ, Z. - HUJO, Ľ. 2013. Possibility of hydraulic fluids with a low environmental impact application in agriculture and transport machinery. In Journal of Central European Agriculture, vol. 14, no. 4, pp. 1592-1601.]Search in Google Scholar
[KUMBAR, V. - GLOS, J. - VOTAVA, J. 2014. Monitoring of chemical elements during liferime of engine oil. In Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, vol. 62, no. 1, pp. 155-159.]Search in Google Scholar
[KUMBAR, V. - DOSTAL, P. 2013. Oils degradation in agricultural machinery. In Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, vol. 61, no. 5, pp. 1297-1303.]Search in Google Scholar
[MAJDAN, R. - TKAČ, Z. - STANČIK, B. - ABARAHAM, R. - ŠTULAJTER, I. - ŠEVČIK, P. - RAŠO M. 2014. Elimination of ecological fluids contamination in agricultural tractors. In Research in Agricultural Engineering, vol. 60, no. spec. issue, pp. 9-15.]Search in Google Scholar
[MAJDAN, R. - TKAČ, Z. - ABRAHAM, R. - STANČIK, B. - KUREKOVA, M. - PAULENKA, R. 2013. Effect of ecological oils on the quality ofmaterials of hydraulic pump components. In Advanced Materials Research, vol. 801, pp. 1-6.]Search in Google Scholar
[NICHOLLS, M. A. - DO, T. - NORTON, P. R. - KASRAI, M. - BANCROFT, G. M. 2005. Review of the lubrication of metallic surfaces by zinc dialkyl-dithiophosphates. In Tribology International, vol. 38, no. 1, pp. 15-39.]Search in Google Scholar
[PERIĆ, S. - NEDIĆ, B. - TRIFKOVIĆ, D. - VURUNA. 2013. An experimental study of the tribological characteristics of engine and gear transmission oils. In Journal of Mechanical Engineering, vol. 59, no. 7-8, pp. 443-450.]Search in Google Scholar
[PHILLIPS, W. D. - STANIEWSKI, J. W. G. 2016. The origin, measurement and control of fine particles in non-aqueous hydraulic fluids and their effect on fluid and system performance. In Lubrication Science, vol. 28, no. 1, pp. 43-64.]Search in Google Scholar
[STACHOWIAK, G. P. - STACHOWIAK, G. W. - PODSIADLO, P. 2008. Automated classification of wear particles based on their surface and shape features. In Tribology International, vol. 41, no. 1, pp. 1135-1139.]Search in Google Scholar
[TARASOV, S. - KOLUBAEV, A. - BELYAEV, S. - LERNER, M. - TEPPER, F. 2002. Study of friction reduction by nanocopper additives to motor oil. In Wear, vol. 252, no. 1-2, pp. 63-69.]Search in Google Scholar
[TULIK, J. - HUJO, Ľ. - STANČIK, B. - ŠEVČIK. P. 2013. Research of new ecological oil-based fluid. In Journal of Central European Agriculture, vol. 14, no. 4, pp. 1384-1393.]Search in Google Scholar
