The paper addresses application of digitazation of production processes, which is part of organizational digitization, also known as Industry 4.0. It deals with modernization and optimization of production systems by creating models in simulation software via digital engineering. For our analysis, 8 real assembly lines were used, with an average of 15 workplaces, which were integrated into one universal line by means of simulation. The aim of our research was to create a digital twin of the real assambly lien and to analyse effectiveness of the proposed modernization universal assembly line using the generated statistical data.
 H. Alavi and P. Habek. Optimizing outcome in the university – industry technology transfer projects. Management Systems in Production Engineering, Vol. 22, No.2, pp. 94-100. p-ISSN 2299-0461, Poland, 2016.
 S. Bangsow. Manufacturing Simulation with Plant Simulation and SimTalk. Springer-Verlag Berlin Heidelberg. pp. 289, 2010.
 W. Bialy and J. Ružbarský. Breakdown cause and effect analysis. Case study. Management Systems in Production Engineering, Vol. 26, No. 2, pp. 83-87. p- ISSN 2299-0461, Poland, 2018.
 M. Buckova et al. Impact of digital factory tools on designing of warehouses, 2017. Journal of Applied Engineering Science, Vol. 15, no. 2, pp. 173-180. ISSN: 1451-4117, 2017
 N. Kumar and D. Mahto. Assembly Line Ballancing: A Review of Developments and Trends in Approach to 28 Management Systems in Production Engineering 2019, Volume 27, Issue 1 Industrial Application. Global Journal of Researches in Engineering Industrial Engineering, Vol. 12, No. 2, USA, [online] [cit. 2017.05.21] Available on the Internet: https://globaljournals.org/GJRE_Volume13/4-Assembly-Line-Balancing-A-Review-of.pdf. 2013.
 P. Polerecký. Proposal of manufacturing system improvement, The Bachelor Thesis, pp. 53, Zvolen. Slovak Republic. 2016.
 P. Polerecký and E. Sujová. Assembly line optimization through Tecnomatix Plant Simulation. In: Conference Proceeding: Recent advances in agriculture, mechanical engineering and waste policy, pp. 200- 207, Nitra. Slovak Republic. 2017
 R. Rosen, G. Wichter, L.O. George, K. D. Bettenhausen. About the importance of autonomy and digital twins for future of manufactuing, IFAC-PapersOnLine 48-3(2015) 567-572 (2015)
 P. Štarchoň, M. Vetráková, J. Metke, S. Lorincová, M. Hitka. Introduction of a New Mobile Player App Store in Selected Countries of Southeast Asia. Social Sciences, vol. 2018, No. 7, doi: 10.3390/socsci7090163
 J. Tokarczyk. Migration of computational models in virtual prototyping of complex mechanical systems. WCECS 2012, World Congress on Engineering and Computer Science 2012, Volume II, San Francisco, USA, 24-26 October, 2012. Lect. Notes Eng. Comput. Sci. 2012, s. 1334-1337. ISSN 2078-0958.