2018-02-122018-02-122017Econtechmod : an international quarterly journal on economics in technology, new technologies and modelling processes. – Lublin ; Rzeszow, 2017. – Volum 6, number 2. – 96 p.2084-5715https://ena.lpnu.ua/handle/ntb/39410enOther© Copyright by Polish Academy of Sciences 2017© Copyright by Lviv Polytechnic National University 2017© Copyright by University of Engineering and Economics in Rzeszów 2017© Copyright by University of Life Sciences in Lublin 201796