1. Ivan Franko National University of Lviv,Department of System Design,Lviv,Ukraine
2. Lviv University of Business and Law,Lviv,Ukraine
3. Karpenko Physico-mechanical Institute of the NAS of Ukraine,Department of Electrophysical Methods of Non-Destructive Testing,Lviv,Ukraine
4. Ukrainian Academy of Printing,Department of Engineering Mechanics,Lviv,Ukraine
5. Lviv Polytechnic National University,Department of Business and Environmental Expertise of Goods,Lviv,Ukraine